Retaliation against strike activity is illegal under US federal law, whether during a strike or following it. This protection also applies to both domestic, international and undocumented postdocs and ARSs.
If you were to experience any issue that you think may be retaliation, take good notes of the events and reach out here: in our Workplace Issue Form your union is here to defend your rights!
Apart from the law, our greatest protection is mass participation: the greater the number of postdocs and ARSs who participate, the more defense we have against CU retaliating against anyone individually.