President Joe Biden will meet with leading chief executives, including JPMorgan Chase’s Jamie Dimon and Walmart Inc.’s Doug McMillon, to boost support for the $1.9 trillion virus relief plan he’s trying to push through Congress.

Gap Inc. CEO Sonia Syngal and Lowe’s Cos. CEO Marvin Ellison will also attend the Oval Office meeting on Tuesday afternoon to discuss “the critical need for the American Rescue Plan to save our economy,” the Whie House said.

Treasury Secretary Janet Yellen and Vice President Kamala Harris will also be present, along with Tom Donohue, CEO of the U.S. Chamber of Commerce.

Endorsements from major U.S. business leaders could help Biden garner Republican support for his stimulus, though the White House has indicated it is prepared to pass the bill through Congress with only Democrat votes.

The Chamber of Commerce, one of the most powerful lobbying groups in Washington, has traditionally aligned itself with the GOP, but pivoted last year to begin working more with Democrats after clashing with the Trump administration over its protectionist trade measures. McMillon is also chairman of Business Roundtable, another influential business lobby in Washington.

Biden kicked off talks last week at the White House, where he met with a group of Republican senators who proposed a stimulus one-third the size of his plan. While both sides spoke optimistically about working together, Biden has since said he is not interested in scaling back his proposal. Liberal Democrats and progressive groups have pressured Biden not to give in to Republican demands.

“If I have to choose between getting help right now to Americans who are hurting so badly and getting bogged down in a lengthy negotiation or compromising on a bill that’s up to the crisis, that’s an easy choice,” Biden said Friday. “I’m going to help the American people who are hurting now.”

Senator Rob Portman of Ohio, one of the Republicans behind the smaller virus package, said Tuesday it is “too bad” Biden seems interested in pushing forward without GOP lawmakers’ support.

”I’m discouraged that the current administration seems not to be interested in pursuing the bipartisan solution,” Portman said during a confirmation hearing for Neera Tanden, Biden’s pick to lead the White House budget office. “Good ideas come from both sides of the aisle, as we have found out in the previous five COVID-19 packages that we have passed in this Congress.”