Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
ATF fast and furious whistleblower John Dodson, plus former Utah Governor Jon Huntsman.
The threat of a partial government shutdown is just hours away, as Congress battles once again over President Barack Obama's health care law, so-called Obamacare.
If Congress fails to compromise before midnight Monday, about a quarter of government workers, the ones deemed "non-essential," will have forced and potentially unpaid time off starting Tuesday.
CNN's Jake Tapper reports.