23 (America)
17.3bil
12 million
Tens of thousands
Depends on how many illegal aliens... One truck per every illegal alien.
The names of the first illegal aliens in the United States are not known. There are millions of illegal immigrants that are in the US, as of 2014.
No, they are not legal residents of the US and cannot use US laws to change the status of their marriage.
1
Please don't equate "illegal aliens = criminals". Anybody can, and sometimes does, commit crimes, not just illegal aliens.
Not counting the 9,000,000 from Mexico, no.
Yes, if they aren't illegal aliens.
Ideally? It has slowed illegal immigration and drug trafficking from Mexico into the US. In reality? Nothing. Many illegal aliens no longer try to enter the United States as it is in the middle of an economic recession, and the drug trafficking into the US has continued unabated, even spilling some of the Mexican War on Drugs violence into Arizona, New Mexico and some counties of Texas.
As there are many unsolved murders this cannot be known.