In wake of the recent terrorist attack in Paris that resulted in 129 deaths, some lawmakers are pushing to pass legislation that would block people on the U.S. terrorist watch list from legally purchasing firearms.

Following the deadly ISIS attacks in Paris, many have questioned whether the same kind of attack could occur in the U.S., where terrorists could potentially get access to the guns which were used in Paris.

"Membership in a terrorist organization does not prohibit a person from possessing firearms or explosives under current federal law," according to a 2010 report from the Government Accountability Office (PDF). Plus, the Washington Post reported that the law only prohibits felons, fugitives, drug addicts and domestic abusers from purchasing guns -- not people on the FBI's Terrorist Watchlist, which tracks known or suspected terrorists and their affiliates.

FBI data also shows that people on the watch list received clearance to purchase guns 94 percent of the time between 2004 and 2014.

"If the only mark on your record is that you are on the watchlist, you are allowed to purchase a firearm," said David Maurer, the Government Accountability Office (GAO) director of justice and law enforcement issues, according to ABC.

As a result, Democratic Sen. Dianne Feinstein of California called on Congress earlier this week to prevent suspected terrorists in the U.S. of legally purchasing weapons.

"One of the most important things we can do to keep this country safe is keep guns and other weapons out of the hands of potential terrorists," said Feinstein said in a statement to ABC on Tuesday. "The majority of the victims in Paris were shot with Kalashnikov rifles, which are sold at gun dealers and gun shows across this country. There is simply no excuse for Congress to not close this dangerous loophole."

Although lawmakers have introduced bills over the years to try to prevent suspected terrorists from purchasing firearms and explosive, none have passed due to strong opposition by the gun lobby. The National Rifle Association argues that such laws prevent legal gun purchases but don't stop people from acquiring firearms illegally.

The American Civil Liberties Union also opposes the watchlist program, saying, "The federal government's watchlist system lacks the kind of narrow, specific criteria and rigorous safeguards that would help protect innocent people from the negative consequences of blacklisting," said Hugh Handeyside, a staff attorney with the ACLU National Security Project. "Instead, the criteria are overbroad, ensnaring innocents, and the system as a whole is unfair and bloated with no meaningful way to clear one's name and get off the lists."