(Undated) -- Oregon is among eight states and the District of Columbia suing the Trump administration to stop the plan for 3D-printed guns from being made available online. The Trump administration last week reached a settlement that would allow a Texas company and presumably others to put plans for the weapons up for download. Some can be printed from the same material Lego blocks are made of. Another company has plans for AR-15 rifle parts that can be milled from a block of aluminum. Attorneys general in Washington, Massachusetts, Connecticut, New Jersey, Pennsylvania, Oregon, Maryland, New York and the District of Columbia filed the suit against the government Monday, asking to block public access. Another 21 states have sent letters to the Justice Department asking for immediate action to block the plans, some of which are already online.