Illegal pay taxes Argument!
There's the "illegal aliens pay tons of taxes" argument. Sure, they all pay real estate taxes (in rent) and sales taxes (most states). Those working on the books (typically using stolen Social Security numbers) pay FICA and, perhaps, income taxes. But they're mostly ill-educated, prolific breeders, low-skilled and pay little or no taxes connected to their working -- in fact, most claim the Earned Income Tax Credit, i.e. negative income tax! If a family with both parents working has two kids in school, that's at least $15k/year just for schooling, way more than the taxes on, say, $35k/year aggregate income.

Robert Rector at the Heritage Foundation has done the systematic accounting on all this. A typical household headed by a low-skilled illegal alien is a net drain of about $20k/year for the rest of us, year after year. (Low-skilled Americans are a similar burden, but they're part of the national family, not gate crashers from other societies.)

Illegal Bad..Amnesty good Argument!
There's the "illegal immigration is bad, but make them citizens and problem solved" argument. Nope. If that were the case, legalizing (i.e. amnestying) the illegal aliens would solve the problem. But they'd still be (on average) low-skilled workers whose burden on the rest of us would continue. In fact, once legal they'd be able to access more public benefits programs, so their cost to the rest of us would actually rise substantially. In addition to bringing in their relatives under chain immigration in a never ending chain! In short, all of the problems of mass illegal immigration are shared & increased by mass amnestying them.

Then there is they are all God,s children argument.
Isn't everyone God,s children? If so, then guess the open borders crowd are saying everyone and anyone has the right to Invade this Nation, waving their flags, demand their rights, while feasting at the trough of public welfare and Kill, Rape and Rob thousands of American citizens each year! Rattlesnakes are God creation also but not many would invite them into our house and provide welfare and medical benefits for them!

There are 100,s of millions probably billions from India, China, Africa, etc. that would like to immigrate to the USA. If it ok for Latinos to pour across our borders then unless the open borders crowd are racist it should be ok for any and all of the world people no matter their Education, Religion, Race, Criminal convictions, Diseases, or Terrorist ties to invade this nation & Waving their flags, demanding their rights & be rewarded with American citizenship!

There's the "the U.S. stole the southwest" argument.
Well, the land in dispute was "owned" by Spain for a couple of centuries. Then by Mexico for about 25 years. During these periods, there weren't more than a few thousand Spaniards or Mexicans in the entire territory. It's been owned by the U.S. for about 160 years now, much longer than Mexico's reign. And the U.S. has actually done something with the land, made it habitable for tens of millions. The difference between American and Mexican "twin cities" straddling the border is like night and day, yet the land is obviously the same. It's not the dirt that's important, it's the people. Put another way, if culture didn't matter, Mexico and Central America would be paradise.

There's the "lettuce" argument
We'll be paying $50/head if we don't have illegal aliens working in the fields. As Phil Martin, ag economist at UC Davis shows, the field labor cost in a $1 head of lettuce is about 6 cents. Triple those wages and Americans will do the jobs. (They're not career positions. They're seasonal jobs for young people, starting in the world of work. I have did similarly menial jobs.) And you'll be paying 10% more for lettuce and other produce. Do you spend $1,000/year on produce? OK, you'll pay $100 more.

The lettuce argument also parallels that for the retention of slavery.

Immigrant Argument!
There's the "everyone's an immigrant except for the 'Native Americans'" argument. Well, the American Indians didn't sprout from the land, they came across the Bering land bridge from Asia. So if the criterion is "You're an immigrant if you had an ancestor who immigrated here," then American Indians are immigrants, too.

In that case, "immigrant" is no longer a useful word, since Everyone's an immigrant.

Then there is the straw man Argument this Nation cannot afford to deport 12 million invading Criminals when the problem is we cannot afford to not deport them!

Never noting if our Corrupt/Pandering/Lawless politicians had abide by our Constitution and enforced our Laws there would not be 12 millions to deport. Even worse, there is not 12 million but between 20 and 30 million but the government prefers to lie and down play the number! ( Same as the 1986 Amnesty was more than double the government estimate, so will this one be) At any rate deportation would save billions in the long run over what they will cost this Nation in welfare in the coming years. Every person with less that a high school education cost a average of 55 thousand over their life time, so apply that times the 12 million plus all their relatives & their relatives in a never ending chain & deportation would be a great bargain and save trillions in the coming years! But deportations is not necessary, just close our borders and enforcing our Laws with E-Verify. Fine companies, imprison executives and cut out the welfare they will self deport. No jobs, No Welfare equals no Illegal Aliens!

The flood of immigrants drives wages and living conditions in our central cities toward those of the Third World & has already destroyed Calif..

This tidal wave imposes sprawl, gridlock, pollution, and environmental damage on our metropolitan areas & Nation.

Immigrant families needing services overwhelm our schools, taxpayer-funded health care facilities, and other public agencies.

Those requiring services don’t assimilate and, instead, expect to be served in their native languages & expect American citizens to assimilate and ones that protest are called racist!

American civic culture frays as each ethnic group establishes its own grievance lobby and pushes for preferences.

Communicable diseases such as tuberculosis (new, drug-resistant strains) return & New diseases like Mexican Swine flu break out!

Shortages of water and other resources loom, especially in immigration-blitzed Southwest.

Most that come across our open borders come from countries where, Crime, Corruption, Poverty, Misery, Anti-education, and hate for Americans has existed for centuries and is normal. Should anyone be surprised they bring those same family values across the border with them?