Who is funding the anti-Bernie Sanders super PAC?

Democratic presidential candidate Bernie Sanders at a rally in Las Vegas (Caroline Brehman/CQ-Roll Call, Inc via Getty Images) Several outside

Luxury hotel stays, private flights, new nonprofits: Leadership PACs can pay for them

(Gonzalo Marroquin/Patrick McMullan via Getty Images) Designed primarily to provide funding for other candidates running for office, leadership PACs are