Former Colorado governor announces White House bid

Former Colorado governor John Hickenlooper announced his bid for the Democratic presidential nomination on Monday, the second governor and 14th candidate to join the field seeking to take on Republican Donald Trump in 2020.

In a video announcing his candidacy, the 67-year-old Hickenlooper said he is seeking the White House "because we're facing a crisis that threatens everything we stand for".

"I've proven again and again I can bring people together to produce the progressive change Washington has failed to deliver," he said.

A former geologist and self-described "nerd", Hickenlooper went into politics after earning a fortune opening up a string of brewpubs in Denver, Colorado's largest city, and other towns.

A political moderate, Hickenlooper took aim at Trump in his campaign launch video: "As a skinny kid with Coke bottle glasses and a funny last name, I've stood up to my fair share of bullies," he said.

Hickenlooper served as mayor of Denver from 2003 to 2011 and as governor of Colorado from 2011 to January 2019.

He oversaw Colorado's economic boom during his tenure as governor, which was also marked by devastating wildfires, floods and a mass shooting at a movie theatre that left 12 people dead.

Colorado passed tough gun-control legislation following the 2012 shooting and the state also moved to legalise marijuana while Hickenlooper was in office.

A former chair of the National Governors Association, Hickenlooper is well-known in Democratic leadership circles, but not to the larger public outside his home state.

Speaking on ABC's "Good Morning America" on Monday, Hickenlooper said the United States is suffering from a "crisis of division".

"I think it's probably the worst period of division that we've had in this country since the Civil War," he said.

"Ultimately, I'm running for president because I believe that not only can I beat Donald Trump, but that I am the person that can bring people together on the other side and actually get stuff done."