The US hasn’t needed unions for a very long time.
Unions came about because of wages, safety, etc. Now all of that is covered by various government rules/agencies that actually enforce the laws. The only area I still see the need for a Union is Police and Fire unions. We have seen numerous cases of Dem mayors, councils, etc. throw officers and depts. under the bus when something happens that is justified but upsets SJWs.
Unions are archaic socialist relics. They certainly need to be completely abolished in government and education.