Horror author Stephen King on Wednesday tore into President TrumpDonald John TrumpTrump: 'Haven't thought about' pardons for Mueller target Pence: Rocket attack 'proves that Hamas is not a partner for peace' Conservation remains a core conservative principle MORE about his request for funding a wall on the U.S.-Mexico border.

King, a frequent Trump critic, called on the president to “do something good for once,” and suggested that he use the $5 billion requested for the wall to feed at-risk children or provide medical care for veterans.

“F--- your wall,” King tweeted. “Split that 5 billion between at-risk children who don’t have lunches and vets who can’t get proper medical and psychological treatment.”

“F--- your vanity project. Do something good for once.”

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Trump is engaged in a battle with Democratic congressional leadership over whether upcoming government spending legislation will include $5 billion that he is demanding to build the wall.

Democrats have said they will not support any bill that contains more than the previously agreed-upon $1.6 billion for border security.

The negotiations escalated Tuesday in a face-off in the Oval Office between Trump, House Minority Leader Nancy PelosiNancy Patricia D'Alesandro PelosiThe Hill's 12:30 Report: Trump, Dems eye next stage in Mueller fight After Mueller, Democrats need to avoid the Javert trap More than a half-million web articles published on Russia, Trump, Mueller since investigation began: analysis MORE (D-Calif.) and Senate Minority Leader Charles SchumerCharles (Chuck) Ellis Schumer4 in 5 Americans say they support net neutrality: poll GOP senator: Trump's criticism of McCain 'deplorable' Schumer to introduce bill naming Senate office building after McCain amid Trump uproar MORE (D-N.Y.).

During the sit-down, Trump repeatedly threatened a partial government shutdown if he does not get the requested funding. Congress has until Dec. 21 to pass legislation and avert a shutdown.