In many ways, yes. With guns specifically, the Supreme Court (in opinions authored by Justices Alito and Kavanaugh, believe it or not) has set a precedent that there are some government-controlled "sensitive places" within which it is reasonable and prudent to place restrictions on firearms. Legislative assemblies, courthouses, government buildings, etc.

So not even the most conservative justices buy into the idea that Americans have a right to bear arms everywhere.