"This president is undermining the constitutional standing of our country," Trump, a billionaire businessman and media personality told the latest debate of the seven leading Republican candidates in opinion polls held in Charlotte, North Carolina on Thursday night.
Trump’s attack on Obama was echoed by other candidates speaking at the debate.
"This guy [Obama] is a petulant child…," New Jersey Governor Chris Christie said. "The American people have rejected your agenda and you're trying to go around it. That’s not right. It's not constitutional. And we are going to kick your rear end out of the White House."
The debate was the sixth in a series to be held with leading GOP (Grand Old Party, alternative name for Republican Party) candidates and like the others was broadcast on national television and podcast, both on Fox Business News.
Obama can take executive actions without cooperating with the US Congress. The possible executive actions include closing of the Guantanamo Bay detention facility, enacting tougher gun safety regulations and continuing normalizing relations with Cuba.