Illegal aliens enter through states next to the border. Mexican and other South American aliens enter mostly through California and Texas. The largest population is in California and second is Texas.
Border crossing is illegal because it allows illegal immigrants into the country. Not only does this pose a national threat, but it also allows for illegal activities, such as smuggling drugs.
There is no precise number available for the exact count of illegal immigrants crossing the American-Mexican border wall annually. The number fluctuates based on various factors such as border security measures, economic conditions, and immigration policies.
Most of them bece illegal because they cross the U.S border without permission.
Of course not, Aliens do not exist. (Unless you count Illegal Aliens, which are people who illegally cross a country's border.)
maybe jail
Border Patrol, Helicopters, etc.
no.
No, it is illegal to bring alcohol across the Mexican border without proper permits and documentation.
Is there a lot of illegal there
Yes, but it would require billions to build a "wall" with the constant surveillance needed to keep illegal people from crossing the border -- remember, the US and Mexico share a common border of 3,141 Kilometers (1,952 miles) along the American states of California, Arizona, New Mexico and Texas. Unless most American taxpayers are willing to give an extra 2 or 3% of their income for the construction and maintenance of such project, it will be pretty difficult to do; besides many hidden interests in America WANT illegal aliens to cross the border.
They want to get in the U.S. without paying for a pasport and having to learn a little English also to get in.