I think what america needs is a General Union.
Something litterally anyone can join.
by joining youd sign a contractual agreement stating the following
I will not perform scab work
I will openly post my wage
I will cooperate with strikes
and youll abide by union rules for 3 months after deciding to leave the union (to gaurentee collective bargaining potential)
in return
they aid in collective bargaining rights for any buisness where they can effectively bargain (atleast 40% unionized)
legal fee aid for employment related lawsuits and council
of course this is just a broad idea and any actualization of this would need more thorough thought and probably a lawyer to look through it