A 3D printed gun figure is displayed during the 3D Prints Design Show at Javits Center, in New York, on April 16, 2015. Photo: Cem Ozdel/Anadolu Agency via Getty Images

Washington State Attorney General Bob Ferguson is leading a multi-state lawsuit filed Monday against the Trump administration for allowing blueprints for 3D-printed guns to be released online starting Aug. 1.

The details: The legal challenge in federal court is seeking a nationwide temporary restraining order to prohibit the government from lifting export controls for the blueprints and to prevent Texas-based pro-gun group Defense Distributed from posting the downloadable gun files online. The federal government reached a settlement with the group after a legal battle earlier this year, allowing anyone to download and print guns, including AR-15s, without being traced or subjected to background checks online.

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Updated 37 mins ago - Politics & Policy

Supreme Court clears way for first federal execution since 2003

Lethal injection facility in San Quentin, California. Photo: California Department of Corrections and Rehabilitation via Getty Images

The Supreme Court ruled early Tuesday that federal executions can resume, reversing a lower court decision and paving the way for the first lethal injection since 2003 to take place at a federal prison in Indiana, AP reports.

The big picture: A lower court had delayed the execution, saying inmates had provided evidence the government's plan to carry out executions using lethal injections "poses an unconstitutionally significant risk of serious pain."

2 hours ago - Health

More Republicans say they're wearing masks

Data: Axios/Ipsos poll; Chart: Andrew Witherspoon/Axios

Nearly two-thirds of Americans — and a noticeably increasing number of Republicans — say they’re wearing a face mask whenever they leave the house, according to the latest installment of the Axios-Ipsos Coronavirus Index.

Why it matters: A weakening partisan divide over masks, and a broad-based increase in the number of people wearing them, would be a welcome development as most of the country tries to beat back a rapidly growing outbreak.

Buildings are getting tested for coronavirus, too

Illustration: Eniola Odetunde/Axios

Testing buildings — not just people — could be an important way to stop the spread of the coronavirus.

Why it matters: People won't feel safe returning to schools, offices, bars and restaurants unless they can be assured they won't be infected by coronavirus particles lingering in the air — or being pumped through the buildings' air ducts. One day, even office furniture lined with plants could be used to clean air in cubicles.