How much money could be saved by addressing fraud in the U.S. tax and entitlement systems?

According to the discussion between Jesse Watters and Greg Gutfeld, over a 10-year normal budget window, the government could potentially save over a trillion dollars by clamping down on massive fraud in tax and entitlement systems. The fraud involves criminals using fake identities to steal billions in taxpayer benefits. The exact amount is difficult to determine without full access to the data, but the scale of the problem is significant enough that addressing it could recover substantial taxpayer funds that are currently being stolen through organized fraud schemes targeting government benefit programs and tax systems.