Trump spokesperson Hogan Gidley made much the same point, saying the administration supports the law against wholly plastic guns, including those made with a 3D printer. Wilson sued in 2015, claiming the order infringed on his constitutional rights.
A four-year legal battle followed between digital weapons publisher Defense Distributed, pro-gun activists the Second Amendment Foundation and the federal government, which concluded with a surprise decision that United States citizens can "access. use and reproduce" the plans.
"The effect is restoring the status quo before the government took action but (the judge) hasn't technically ruled on the lawfulness of the government action yet".
Washington state attorney general Bob Ferguson had announced on Monday that he would be suing the State Department to get it to change its mind on the so-called "ghost guns".
Gun control advocates welcomed the federal court's temporary restraining order against Defense Distribution. Iowa and Virginia joined the case on Tuesday.
Under the terms of the government's settlement with Defense Distributed, the State Department gave the company the go-ahead to begin publishing the files on Friday. The governor called the impending release "reckless".
Trump's tweet follows the filing of a joint lawsuit by nine states and the District of Columbia to block the release of 3D blueprints from Cody Wilson, a well-known creator of 3D gun designs, who won permission from the State Department to post schematics for homemade firearms, the New York Times reports. If he fails to act, "Donald Trump will be totally responsible for every downloadable, plastic AR-15 (gun) that will be roaming the streets of our country".
And Senator John Cornyn of Texas, the second-ranking Republican, said, "People shouldn't be under the impression they can download this and make an undetectable firearm".
Earlier, rulings in New Jersey and Pennsylvania temporarily stopped Defense Distributed's blueprints from being posted in those states.
NRA spokesman Dana Loesch has said trying to outlaw the guns, or the technology that produces them, would be "absolutely unenforceable". "The governor of one state can't sensor the speech and commerce of a citizen of another state".
Nelson past year filed legislation to require any gun to have a metal part so it can be detected and also carry a serial number.
The lawsuit, says the public availability of the gun blueprint poses a "serious threat to the national security and public safety" - partly because 3D-printed guns often elude metal detectors and are not stamped with a traceable serial number.
The order has put on hold a plan for people to be able to legally download blueprints to make 3-D printed guns.
Defense Distributed now aims to create a repository of gun designs and to relaunch Defcad.com, according to a recent profile of the company and Wilson in the magazine Wired.
Some experts have sought to downplay the fears of 3D-printed weapons, emphasizing that 3D printers are expensive and weapons produced in them quickly disintegrate if used.
"I definitely would not fire a 3D printed gun, I'd be anxious about my own safety", Dukes said.