The USPS has a "universal service obligation", so no. The US postal strike of 1970 (which I hadn't heard of before) was apparently illegal, but when a huge numb

The USPS has a "universal service obligation", so no. The US postal strike of 1970 (which I hadn't heard of before) was apparently illegal, but when a huge number of people perform an illegal act it's often not in the government interest to fire them, but to instead negotiate. https://en.wikipedia.org/wiki/United_States_postal_strike_of_1970 https://en.wikipedia.org/wiki/United_States_postal_strike_of... : President Nixon appeared on national television and ordered the employees back to work, but his address only stiffened the resolve of the existing strikers and angered workers in another 671 locations in other cities into walking out as well. Workers in other government agencies also announced they would strike if Nixon pursued legal action against the postal employees.[7]