Nancy Pelosi. Giving no quarter as the petition is filed. For my money, this woman is not involved enough in the business of congressional governing. Do I have to say more? You can see progress on who has signed this petition here. I presume that they will refresh that list as Representatives sign on. You can see her introduce this here:
She is calling for bipartisan support — mainly because this does need Republicans to sign on to make it to the 218 number that will pass it. The Hill reports that if this does pass, the earliest it will come to a vote is Christmas Eve, though.
H.R. 15 is the bill they are attempting to petition out.
As of this writing, John Carney has not signed on, but I imagine he will. Would not hurt for his office to hear from a few of you to encourage him to do it.