"Are Democrats still lulling themselves into believing that they will win simply because Trump is abhorrent and history is on their side? That was not enough in 2016," Mika Brzezinski said.
"How sick, how sick for someone in the White House to tweet "thank you" to Donald Trump for these reunions," Brzezinski said on 'Morning Joe."
The first lady and first daughter have both faced criticism in recent days.
The MSNBC personality suggested Trump may be suffering from a mental "disconnect" following his response to Hurricane Harvey.
Will the powers of the federal government be invoked to settle a personal grudge?