What’s an ‘improper’ Medicaid payment? Is rate as high as Vought said?

The claim:

Responding to charges that President Donald Trump’s tax and spending bill would cut Medicaid coverage for millions of Americans, Trump administration officials misleadingly counter that it targets only waste, fraud and abuse.

During an interview on CNN’s "State of the Union," Russell Vought, the administration’s director of the Office of Management and Budget, framed Medicaid as sagging under the weight of improper payments.

An "improper" payment refers to payments made erroneously to beneficiaries and their providers or without sufficient documentation.

Pressed June 1 by CNN host Dana Bash about concerns that poorer Americans would suffer if the bill becomes law, Vought called such arguments "totally ridiculous."

"This bill will preserve and protect the programs, the socia