I see, it is quite legal to wander back and forth without documents into and out o the U.S.  Who are those people who are referred to as "illegals" then? I take it that the word 'illegal' means the same in American as it does in English.
You ask why I am active on this site. Have you ever stumbled on something which absolutely shocked you? Well, when I first came across NCReporter I couldn't believe what I was reading, I couldn't believe that the writers and the commenters were actually Catholics. I was hooked and found the experience compulsive and irresistible. When I see Cdl Burke or your President is the subject of an article, I can't contain my glee in anticipation of the inordinate loathing, hate, and vitriol which is about to be served up in the comments.
My antipathy towards the U.S. stems mainly from the importation of its brash culture into W. Europe but also because I would never visit a country which has the death penalty or whose judicial system is suspect.