Forced my lily-white posterior. If you don't want to join a union, don't apply at a union shop. If the area where you live only has union shops, move. If there are no non-union shops for your chosen occupation, change occupations.<quoted text>
Forced union membership should not be a job requirement, given that it has absolutely no relationship to your experience, skills, or qualifications. It's about the same as requiring an employee to be white, or a Christian.
It really is a free country - but if you don't like it here, you're free to emigrate. Pretty much any other country will take you.