Antonio Garza, a former U.S. ambassador to Mexico, on Thursday said Republican nominee Donald TrumpDonald TrumpUN meeting with US, France canceled over scheduling issue Trump sues NYT, Mary Trump over story on tax history McConnell, Shelby offer government funding bill without debt ceiling MORE is not suited to be president of the United States.

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When asked during an interview on MSNBC’s “Morning Joe” if he thought Trump was a equipped for the presidency based on his actions and statements, Garza, who served under former President George W. Bush, replied "no."

"In terms of his positions on trade, immigration, temperament and tone, I think he has done a very poor job as a Republican nominee. ... In terms of representing our interests abroad, and ultimately that's what Americans, I think, view their president as a symbolic representative of U.S. interests both at home and abroad ... in that respect, I think he's failed," Garza added. 

The former ambassador also said comprehensive immigration reform is in the best interest of the U.S. 

"Immigration reform isn't about Mexico; its about what's good for the United States. This isn't a bilateral issue. This is something that is very much in U.S. interest to get done."