If individual ICE officers can unilaterally and immediately confiscate work permits and "revoke" DACA status, and if border guards can unilaterally confiscate visas and "revoke" permanent resident status (as happened during the chaotic initial rollout of the Muslim ban) then documents issued by the US have no value, our legal system has no credibility, and the rest of the world would be right to treat us as a pariah state whose legal word cannot be trusted.