https://www.gao.gov/new.items/d06770.pdf https://www.gao.gov/new.items/d06770.pdf via https://en.wikipedia.org/wiki/Illegal_entry#United_States https://en.wikip

https://www.gao.gov/new.items/d06770.pdf https://www.gao.gov/new.items/d06770.pdf via https://en.wikipedia.org/wiki/Illegal_entry#United_States https://en.wikipedia.org/wiki/Illegal_entry#United_States