Republican presidential candidate Donald Trump speaks as opponents Marco Rubio, left, and Ted Cruz look on during the GOP presidential primary debate at the University of Houston on Thursday.
Republican presidential candidate Donald Trump speaks as opponents Marco Rubio, left, and Ted Cruz look on during the GOP presidential primary debate at the University of Houston on Thursday. David J. Phillip AP
Republican presidential candidate Donald Trump speaks as opponents Marco Rubio, left, and Ted Cruz look on during the GOP presidential primary debate at the University of Houston on Thursday. David J. Phillip AP