Illegal immigration supposedly is a misdemeanor.
However, having fraudulent documents, which most illegal immigrants use to illegally work in the USA is a felony.
Or, if not using fraudulent documents, working under the table for cash and not paying taxes is ALSO a felony.
Or is the left going to say that "Tax Evasion" doesn't make you a criminal?
(Which, because I do understand my political opponents, they will brush aside and say "They're just doing what they have to do! It's not the same as YOU not paying your taxes!")