President Donald Trump is meeting with a faction of conservative lawmakers at the White House who have threatened to sink his signature tax legislation over its $3.4 trillion price tag as lawmakers cast doubt on whether it can pass by July 4.

Several House Republicans arrived White House on Wednesday morning for meetings as the president presses his party to pass the sweeping legislation.

The $3.4 trillion legislation would extend tax cuts from Trump’s first term, implement campaign promises such as eliminating income taxes on tips and flood militarized resources to immigration officials.