A heated congressional hearing put Trump's mental and physical health in the spotlight, bad news for the White House as it tries to project strength.

• Representative Ted Lieu grilled Secretary of State Marco Rubio over claims Trump fell asleep during important meetings.
• Videos shown to Congress appeared to show Trump dozing at a cabinet meeting and a Memorial Day ceremony.
• Rubio denied everything, insisting Trump never sleeps, works inhumane hours, and calls aides at 2 a.m.
• Trump has not been seen in public for 8 days and reportedly keeps taking cognitive tests, fueling speculation.
• Foreign news channels are mocking Trump as weak, and critics say his decline is obvious and getting worse.

Outlook: Pressure over Trump's fitness for office will likely keep building, with more public scrutiny and calls for him to step aside.