While Congress is still reeling from a last-minute push to pass the GOP tax bill, House Republicans tried to ram through a bill that would reauthorize major surveillance programs, with language that may have actually expanded what the National Security Agency and FBI are allowed to do.

A last-minute amendment Tuesday night left privacy activists scrambling to understand the details of the bill, fearing a possible vote as early as Thursday morning. The Rules Committee later announced that it would postpone its meeting on the bill — meaning that it wouldn’t imminently come to vote — but leadership could still try to force it through by attaching it to a budget resolution.

Trying to drum up support for the bill, House Permanent Select Committee on Intelligence Chair Devin Nunes, R-Calif., circulated a two-page flyer with enlarged images of Islamic State fighters and Haji Iman, ISIS’s former finance minister who was killed by U.S. forces in 2016.

“VOTE YES ON H.R. 4478,” the flyer reads. “HAJI IMAN would still be plotting to kill Americans without Section 702.” On the second page, the flyer goes on to say that 702 surveillance over a two-year period helped locate Iman.

The flyer was signed “HPSCI majority,” with public contact information for the committee office.

A spokesperson for Nunes confirmed that Republican committee staff had sent around the letter, and said it was an updated version of an earlier document posted to the committee’s website.