Bruce Rauner also called half of principals in Chicago Public Schools "incompetent” in email to Chicago Mayor Rahm Emanuel.
Decision could be announced during weekend.
Major police presence, extreme heat have stifled unrest.
He questions decision to protect Baltic republics against Russia.
Sexual harassment claims help push out network giant.
Gives no indication feud with Trump will end.
Also praises Trump's children; says Republican party unified.
Escalation comes during Texas state delegation breakfast.
Vows not to support anyone who wages personal attacks against his family.
Cruz gives speech, but won’t endorse.