Judge blocks publishing 3D printable gun blueprints

(CNN/RNN) – Lawmakers on both sides of the aisle are voicing concerns over 3-D printed guns.

That's because a legal settlement the federal government reached with a nonprofit had allowed schematics for a 3D-printable handgun to be posted online starting Wednesday, Aug. 1.

However, a federal judge stepped in Tuesday, issuing a temporary restraining order on the plans being uploaded.

Some lawmakers had earlier called for the online schematics to be blocked.

"The idea of these print-on-demand ghost guns is as scary as they sound," said Sen. Chuck Schumer, D-NY, the Senate minority leader.

Rep. Scott Taylor, R-VA, also expressed his concerns.

"I think we should take this up in Congress to look at it, and see how we may be able to help and be able to protect our citizens in the right way," Taylor said.

President Donald Trump addressed the issue Tuesday.

"I am looking into 3-D Plastic Guns being sold to the public. Already spoke to NRA, doesn't seem to make much sense!" Trump tweeted.

A nonprofit group called "Defense Distributed" posted a video on YouTube in 2013 showing what appeared to be a 3D-printed handgun.

A few days later, the State Department issued a cease-and-desist letter demanding that online instructions for making that weapon be taken down.

The group sued the government, citing free speech – which led to a settlement that allowed the group to publish the instructions on Aug. 1.

"This is what we are up against in evading the detection systems, which is a direct threat to the national security," said Sen. Bill Nelson, D-FL.

On Monday, 21 state attorneys general sent a letter to Secretary of State Mike Pompeo and Attorney General Jeff Sessions asking the government to withdraw from the settlement.

U.S. District Judge Robert Lasnik in Seattle, WA, issued the restraining order against the online blueprints Tuesday.

Copyright 2018 CNN. Raycom News Network contributed to this report. All rights reserved.