Rikkitic:
This gives me hope that he will eventually be impeached for senility.
Senility isn't grounds for impeachment. It's possible that he could be removed from office temporarily or permanently under section 4 of the 25th Amendment.
Every single person in the WH must already know that he's an unbalanced idiot. They clearly want it that way. He can sound reasonably coherent when reading what they write for him from a teleprompter. So long as he can keep that up, he's safe.
He's also going to be safer from impeachment the moment Brett Kavanaugh is sworn in to SCOTUS. The media is focused on the potential for him to revisit "Roe vs Wade" - but AFAIK he has no intention to do that. He is however strongly opposed to prosecution or investigation of a president for anything during the course of the presidency (ie he'll pull the rug out from under the Mueller investigation). Hail King Trump. Bend a knee - he's here for another 2 1/2 years at least.