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

Trump's concern comes after Democratic state officials filed last-minute lawsuits and prepared legislation in a frantic attempt to halt the widespread availability of 3-D printable plastic guns, which would be available in a free download on Defense Distributed's website.

Senate Minority Leader Charles E. Schumer (D-N.Y.) retweeted to Trump Tuesday, saying that "your administration approved this. What kind of incompetence and dangerous governing is this?"