SCOTUS actually took some of that "constantly being legally challenged and blocked" away when they took away nation-wide injunctions. Even if they're issued by federal judges against nation-wide orders which were given by a nationally-powerful elected official.

> SCOTUS actually took some of that "constantly being legally challenged and blocked" away when they took away nation-wide injunctions.

Arguably, they added to it, since now nation-wide policies are instead being blocked locally by multiple district courts instead of just facing nationwide injunctions in the first place they are litigated.