Whether charges have been made is completely irrelevant. If you prevent a LEO from doing is or her job that's obstruction, or spoliation, or one of a couple oth

Whether charges have been made is completely irrelevant. If you prevent a LEO from doing is or her job that's obstruction, or spoliation, or one of a couple other charges depending on the specifics. If this wasn't the case, you do these sorts of obstructions to trick officers into never laying charges for the crime you committed. You might respond, "well shouldn't they be charged with the crime they committed in that case, not the obstruction stuff?" And they can be charged for that as well, but often the obstruction, especially the destruction of evidence, makes it impossible to actually get a conviction.