Biden heads to Iowa, fueling 2016 speculation

Add Vice President Joe Biden to the list of potential 2016 candidates traveling to the first-in-the-nation caucus state.

Biden will travel on official White House business next week to Des Moines, Iowa where he will deliver a speech on the administration's economic policies, his office announced Friday. And one close supporter told CNN that some in his loyal circle of friends and advisers in Iowa got the heads up about Biden's visit before the Des Moines Register broke the news Friday.

Iowa is a crucial test for presidential candidates and Biden's travel to the state will only fuel more speculation that he is planning a presidential run. Biden last visited Iowa in October.

Biden will speak at Drake University and join a "roundtable discussion" at a local community college, his office said.