I am not quite sure what type of household you were raised in, but my family believes in paying your dues, no matter how unfair or unjust they may seem. No, my father is not going to evade paying his fucking taxes. He is an American citizen and is not going to bail out on his country like that. Realistically, for my father, it IS hard to drop your citizenship. He would have to take at least 10 days off of work to somehow get to New Jersey (his home state) and meet and do paperwork and get it so he can lose his citizenship. That isn't going to fly with his job, and paying for 10 round trips to New Jersey from Ontario is kind of fucking pricey. Secondly, the majority of my family is American and very patriotic. My Grandmother, Aunt, and Uncle etc. would freak out if he dropped his citizenship. Not to mention the fact he would like to end up retiring one day in either Florida/California and owns investment properties in the US.
My dad is an American citizen, so the government can do whatever they want with him. He has to pay taxes just like everyone and can get in huge shit for not doing it. Paying taxes really hasn't been an issue for my family because in the past, previous administrations have not made their out of country citizens pay the same rates as someone who lives in the country.
Getting banned from entering the United States is a fucking bad thing. I guess you are too stupid to realize how detrimental this would be.