Trump threatens to 'reciprocate' countries that issue travel warnings to US

US President Donald Trump on Friday threatened to "reciprocate" travel warnings issued against the U.S. following a pair of mass shootings, - “USA Today” has reported.

"We are a very reciprocal nation, with me as the head. When somebody does something negative to us in terms of a country, we do it to them," Trump told reporters.

Following two mass shootings that left more than two dozen people dead and more than twice as many injured, countries like Uruguay, Germany, Canada, and New Zealand have issued travel warnings to their citizens thinking of traveling to the United States.