I'm sorry but it does not very much still exist. Otherwise, Congress would be doing something other than praying for the Anointed One and his holy war.

I'm not obeying in advance, but I'm not giving lip service to normality, either.

You are. Congress could stop this right now if they wanted. That they aren’t is of course a problem, but that’s very different than saying the system of checks and balances doesn’t exist. The latter is giving the executive power it doesn’t have.