A key Democrat behind efforts to end US support for Saudi Arabia in Yemen is working to convince Sen. Lindsey Graham to support the measure and said the Republican could be a "game-changer" in convincing President Donald Trump to get on board.

Since Jamal Khashoggi was killed in the Saudi consulate in Istanbul, Turkey, in October, there's been a major shift in Congress when it comes to the US government's ties to Saudi Arabia.

The US has been a steadfast partner of the Saudis for years, but Khashoggi's killing has strained the relationship. Now, there's an ongoing, bipartisan effort in Congress for the US to end its support for the Saudi-led coalition in Yemen, where a brutal conflict has led to a devastating humanitarian crisis.

Democratic Rep. Ro Khanna of California, who's been at the forefront of the push to end US involvement in the Yemen conflict, believes Graham could be the key to getting other Republicans and President Donald Trump to embrace a resolution to this effect.

As a member of the Senate Foreign Relations Committee, Graham is one of the most influential figures in the GOP foreign policy establishment. The South Carolina Republican is also one of Trump's more influential confidants.

Graham's influence in Congress and on the president are why Khanna is working behind the scenes to get Graham to support the Yemen resolution.

"I think he could be a game-changer in this thing," Khanna said.

In particular, Khanna said that Graham's influence with Trump could help in the effort to get the president to support the resolution.

AFP.