“I think Madison never imagined or envisioned a Congress with no ambition. This is a Congress without ambition. This is a Congress without really a belief structure in defending legislative prerogative. They just are a rubber stamp for whatever a president tells them to do.”

— Sen. Rand Paul (R-KY), quoted by the Washington Post.

This seems on point to me. It is one of the chief weaknesses of a presidential system of government with political parties. I’m not sure there is any way to fix it apart from significant reforms either. Even if there is some sort of backlash and congress reasserts itself, it can at best be only temporary.