Watch: Rubio: ‘Radical Islamists’ plotting against US ‘increased’ since 9/11

Former GOP presidential contender Sen. Marco Rubio (Fla.) tells The Hill that "radical Islamists" intent on attacking the U.S. have "only increased" plotting since 9/11.

Asked how likely an attack on U.S. soil would be following the bombings in Belgium, Rubio told The Hill's Molly K. Hooper that since 9/11 "radical Islamists are constantly plotting against the homeland ... it's only increased, unfortunately."

Watch the video above to hear Rubio in his own words.