Kimberly Brandt, the head of program integrity for Medicare, concedes that until recently, CMS didn't actually look for fraud.

NPR: Feds Fight Rampant Medicare Fraud in South Florida

The Budget also includes other investments in program integrity throughout the Federal government that has the potential to generate additional savings.

WHITEHOUSE: Testimony of Director Portman

It is widely recognized that home health genuinely suffers from bad-apple providers and other issues of program integrity that have nothing to do with beneficiaries.

FORBES: President Obama's Disappointing Health Care Budget