Obama, Sanders to meet at the White House

WASHINGTON -- President Obama and Vermont Sen. Bernie Sanders are set for a closed door meeting at the White House.

The meeting will happen this morning at the request of the Sanders campaign.

VIDEO: Sanders supporters say nomination process rigged for Hillary

Supporters say Bernie Sanders will be denied the nomination by party officials

Read also: The system isn't rigged against Bernie Sanders

Sanders has come under pressure to drop out of the presidential race after former Secretary of State Hillary Clinton clinched the role of presumptive nominee.

The Obama administration has hinted it will not force the issue.

Vice President Joe Biden says Sanders should be given the opportunity to decide the future of his campaign.

VIDEO: Bernie Sanders makes campaign stop in Houston

Democratic presidential candidate Bernie Sanders packed Hofheinz Pavilion with thousands of supporters

Sanders has vowed to stay in the race through the Democratic National Convention in July.

Meantime, Obama may endorse Hillary Clinton for president as soon as today.

VIDEO: 'Birdie Sanders' breaks the internet after campaign appareance

A bird made a surprise visit on the podium of Bernie Sanders as he spoke at a rally in Portland, sending the Internet into a frenzy.

VIDEO: Marijuana use should not be a federal crime, Sanders says

Sen. Bernie Sanders says its time to remove marijuana from federal drug laws