Former Rep. Gabby Giffords’ gun control group is targeting eight vulnerable Republicans with a six-figure ad buy ahead of the House’s vote on a bill that would allow for concealed carry across state lines.

Giffords, the congresswoman’s organization, is running digital ads against the eight Republicans, according to Politico. The group is also running a radio ad against the three southern California Republican lawmakers on the list.

“In the wake of our country’s worst mass shooting, Congress came up with its most dangerous idea yet: nearly anyone with a hidden loaded gun would be allowed into your community,” a narrator says in the ad, according to Politico. “No background check? No training? No questions asked. Will Jason Lewis side with law enforcement, or the gun lobby?”

The ads will run against Reps. Steve Knight of California, Ed Royce of California, Mimi Walters of California, Mike Coffman of Colorado, Lee Zeldin of New York, Barbara Comstock of Virginia, Rodney Frelinghuysen of New Jersey, and Jason Lewis of Minnesota.

The House is expected to vote this week on the Concealed Carry Reciprocity Act of 2017, which allows people with concealed carry permits to bring their guns across state lines. The bill was introduced in the wake of reports of legal gun owners being arrested for traveling through states with stringent gun laws.

However, officials in states with strict gun laws on the books are urging lawmakers to oppose the bill.