WASHINGTON — Sen. Lindsey Graham said Sunday that President Donald Trump has an obligation to get behind the effort to enact stronger gun-control laws.

Graham, R-S.C., said Trump needs to make a proposal to Congress on gun control and school safety, and that Republicans must work with Democrats to get legislation passed after the school shootings last month in Parkland, Fla., in which 17 people were killed.

“If we don’t, we’re going to get hurt because most Americans believe we should solve problems that Americans are facing, like gun violence and school safety problems,” Graham said of Republicans on CBS’ “Face the Nation” Sunday. “If we don’t take this up and Democrats don’t work with us, we will all suffer, and we should.”

Trump cheered gun-control advocates during a White House meeting Feb. 28 with Republican and Democratic lawmakers. He stunned both sides by endorsing expanded background checks, raising the age limit for buying some firearms and keeping the mentally ill from obtaining weapons.

The White House appeared to backpedal on those comments after a meeting the next day between Trump and the National Rifle Association’s top lobbyist, Chris Cox, who said on Twitter that Trump and Vice President Mike Pence “don’t want gun control.”

White House press secretary Sarah Huckabee Sanders said Friday that Trump is not “fully on board” with a background-check proposal by Sens. Pat Toomey, R-Pa., and Joe Manchin, D-W.Va.