I support open borders change my mind

So do immigrants, like when they are blood donors.

That was done to make sure that the immigrants learn English.  Granted, if we opened up our borders with the whole world, many of the immigrants would already know English since the English language is incredibly widespread amongst the world population.  More people know English than the number that know Chinese(around 20%).  Also, there is some instinctual assilimination that immigrants as a group already go through that would ensure that this number is over 20%.  I say this because here is my line of thinking:

-The US doesn't filter on the basis of religion.  Despite that, immigrants from India are more likely to be Christian if they reside in the US (around 20%) than if they aren't immigrants (around 2%).

I therefore think that if the US didn't filter on the basis of English proficiency, we would still get more English knowledge among the immigrants than random earthlings would present.  Immigrants tend to in many respects emulate the country they immigrate too.

There aren't that many areas in the US where this is the case.  There are some, but not many.  Most people in CA and TX know only English in terms of languages.  Moreover, with open borders, people are mostly going to live in big metropolitan cities, far from the US border, and other immigrants would come so English would be used as a lingua franca and eventually as a primary language amongst the descendants of immigrants.

A lebanese person and a Bolivian person having a kid will mean that the kid will easily learn ENglish and may be bilingual, but English would be their primary language.

Immigrants are more likely to own businesses than native born people.

https://www.sba.gov/sites/default/files/rs396tot.pdf states, 

Then why haven't we?

I'd abolish the income tax and replace it with a sales tax and a capitol gains tax.  Anyone that buys anything for any reason would have to pay a tax on it.  This applies to native born people and immigrants.  I'd show them how to get good paying jobs with the education they have (there are so many jobs you can get with no college education, so hook the immigrants and anyone else who needs one with a job and they should be set).  They also could own a business, creating jobs for many other people (which immigrants are more likely to do) and unemployment would plummet.

We could jail all the violent drug dealing gangs and then there would be no one to bail the gangs out.

Most Hispanics aren't bribed by the cartels. The ones that are get jailed.

How? They won't have the money to do extortion.

The cartels haven't infiltrated every US institution.

 open borders would remove their biggest stumbling block. 

And they also take plenty of lives, crash cars, etc that would require a need for blood transfusions. 

You're obsessed with blood donation lol.

 if you let in 50 million Latin Americans into the Southwestern US

There aren't currently many areas of the US where you need to speak Spanish to get by, you are correct. But that is right now, when we have 1,000,000 immigrants per year. Now, if you let in 50x that from south of the border, that is obviously going to change.

How would they easily learn English if neither of their parents are proficient in the language?

They are also much more likely to strain the welfare system than native citizens.

https://cis.org/Report/63-NonCitizen-Households-Access-Welfare-Programs#:~:text=Welfare%20use%20tends%20to%20be,the%20rate%20is%2070%20percent.

Immigrant-owned firms have $435,000 in average annual sales and receipts,which is roughly 70 percent of the level of non-immigrant owned firms at$609,000. Examining the full distribution of sales reveals that 11.4 percent of iiiimmigrant firms have sales of $500,000 or more, which is similar to thepercentage of non-immigrant firms at this level.

4. Immigrant-owned businesses are slightly more likely to hire employees than arenon-immigrant owned businesses, however, they tend to hire fewer employees onaverage. Among immigrant owned businesses that hire employees these firms hirean average of 8.0 employees with an average payroll of $253,000. Employer firmsowned by non-immigrants hire an average of 11.9 employees with an averagepayroll of $429,000.

Not saying I think this is necessarily a good point, but it is true that sales taxes are regressive taxes, meaning they harm the poor and are lenient on the rich.

How’s that working in Mexico right now? Imagine the lawlessness in Mexico rn within the borders of America and tell me you’re going to put these people in jail. El Chapo escaped from a maximum security prison in Mexico. 

That’s my point. They will. What are you going to do then?

Mexico is very prone to bribes.  At this point, I'd probably shoot El Chapo since he constantly escapes jail.

I don't think they will infiltrate every US institution. We should get rid of the drug cartels in the US, maybe shooting the leaders. 

Moreover, most immigrants (like over 99% of them) want nothing to do with El Chapo. They are fleeing the drugs and want nothing to do with them. 

Most people that would come to the US with open borders aren't even Hispanic, so the notion that they would bring a bunch of illegal drugs here I don't see that happening, especially since we can and should rehab the drug users so they don't end up addicted to drugs again. 

Whatever Portugal did to ease their drug problem worked, so I'd try the portuguese method in terms of eliminating the illicit drug use in this country. My state is a sanctuary state and we don't have a huge drug problem, so I don't think the notion that the immigrants would turn the US into Mexico is accurate.

In 2016 the vast majority of illegal immigrants came through the Southern border and they were disproportionately Hispanic.

Culturally it’s different and the amount of drug access is significantly lower in the first place. There are so many diverging factors.

This is bad for American workers, who, at 157 million are roughly half the population. People will migrate from low-wage economies to high-wage economies. Immigrants compete with the workers who are already there and depress wages. You've said that immigrants start their own businesses. Well, that's true, but they also work. 

You kinda changed my mind a little bit.  What if we had open borders with the whole world except for Latin America with the only requirement for entry from Latin America being you can't be a drug addict and if you are a drug addict, then you have to go through rehab before you come into the US?  Other places in the world don't have drug problems to nearly the same extent as Latin America.

This is because they can't access plane tickets if they are here illegally. If we loosen our immigration requirements and let more Latin American immigrants here, then more people will come on planes, so less enter through Texas and more enter through places like NY.

How are we culturally different from Portugal to a relevant degree? The war on drugs has failed and has resulted in more drug use.

They are more likely to start their own businesses than native born people are, so they create more jobs on a per capita basis than native born workers.  More jobs means more demand for labor, which means more salary for the workers.

Then drugs still come in, just via foreigners lol.

Vast majority of Latin Americans don’t have the funds to do drugs anyways.

Take innocent people and tell them to deliver the load to the other side.

It’s cheaper to transport Colombian cocaine and Mexican marijuana to the United States than to México.

Pew research says 10% more likely, which isn't very substantial.

The economic impact of immigration is largely a transfer of wealth away from the workers and in to the hands of immigrants in the form of wages and their employers in the form of cheaper labor costs.

Remember that the government is to be loyal to the interests of its citizens, not foreigners who wish to enter and work. Their interests don't matter.

Occasionally there are bona fide labor shortages in particular sectors of the economy justifying the importation of labor, like healthcare workers, tech workers, or seasonal farmhands. Though, I'm rather skeptical whenever companies or special interest groups lobby for more immigrants. Bill Gates always wants more H1-B visas. Gee I wonder why.

How would they if the drug addicts get filtered out and if the drug dealers aren't allowed entry?

If that's true, then the vast majority of Latin Americans coming in won't be drug addicts.

What if we just checked everyone who was from Latin America if they had drugs and if they didn't, they were let into the nation?

Why? If your main concern is drugs, then why can't we have open borders with Africa for example since Africa isn't as loaded with illicit drugs as Mexico is?