[wfo]

A president can do an enormous amount without the support of congress. A president can veto, and many, MANY regulations are executive branch administration rules rather than laws passed by the legislative branch.

I'm not particularly in favor of a president whose goal is to "burn it all down" in the way the Libertarians want to, but executive power is wide reaching and almost unfettered and there is a whole hell of a lot a president can do.