Former Vice President Mike Pence said Friday that President Donald Trump should not accept a luxury jet from Qatar to use as the next Air Force One, telling NBC News’ “Meet the Press” moderator Kristen Welker that the move would raise security and constitutional concerns.

Former Vice President Mike Pence is urging President Donald Trump to reject a controversial $400 million Boeing Co. (NYSE:BA) 747-8 jumbo jet gift from Qatar’s royal family, citing national security risks and ethical concerns over what would be the