"Personally, I don't think dual citizens should serve in Congress, but I ultimately decided to introduce a transparency bill requiring full disclosure of citizenship," said Massie in a Monday Fox News interview with Will Cain. "Voters can then make the decision." So far, Massie's Dual Loyalty Disclosure Act (HR 2356) has attracted four co-sponsors, all of them Republicans: Andy Biggs (AZ-5), Clay Higgins (LA-3), Marjorie Taylor Greene (GA-14) and Nicholas Begich (AK at-large). 

While it's not a provision of his transparency-focused bill that would amend the Federal Election Campaign Act, Massie thinks dual citizens in Congress "should... abstain from votes specifically benefitting those countries," the libertarian-minded MIT grad said in a press release accompanying the introduction of his bill. "We swear an oath to the Constitution, and the question is, if you're a citizen of two countries, which oath are you taking more seriously, or can you take them both seriously?" Massie told Fox's Cain.