Donald Trump has confirmed that he will endorse Mitt Romney's GOP presidential bid. He says he made the decision after getting to know Romney after meeting with him several times in the past few months.

He also cited Romney's performances in presidential debates and his tough stance on China as reasons.

Trump was set to announce his support for the Massachusetts governor Thursday afternoon in Las Vegas.

He confirmed the endorsement while speaking with reporters gathered at his Las Vegas hotel for the announcement.

Trump has said negative things about Romney in the past. But he said his comments were a reflection of not knowing Romney well enough.

Trump also said he would not run for president as an independent if Romney becomes the GOP nominee.