The White House plans to reduce the size of the $1.3 trillion spending bill President Donald Trump signed into law in March using an obscure part a 1974 budget law.

The White House will send a “rescission” request to Congress when members return from spring recess next week, according to The Washington Post.

“The administration is certainly looking at a rescission package, and the president takes seriously his promise to be fiscally responsible,” White House legislative director Marc Short told The Post.

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The 1974 Congressional Budget and Impoundment Control Act that created the modern appropriations process also allows the president to request specific cuts to the budget once it is signed into law, which Congress would have 45 days to consider.

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