There is nothing implicitly bad about "legalization". What is bad is "a path to citizenship". I'm OK with "legalization" if the most it involves is permanent residency with NO path to citizenship (i.e. if you accept it, you will NEVER be allowed citizen status, NEVER vote for a (Democrat) candidate for office). Your children will become citizens if born here. No "go back to your home country and apply (ahead of others who have NOT violated US law)". Just permanent residency (call it a "red card").
And of course, the borders MUST be secured FIRST. And I mean PROVEN secured by a 90% drop in attempts to cross (99% would be better).