evidence: Three of the measures addressed in the Senate bill were tested in the poll and enjoy broad support from Americans, including majorities across party lines. These are requiring background checks for all gun purchases, prohibiting the purchase of guns by people who have been determined to be a danger to themselves or others, and so-called "red flag laws" authorizing courts to allow the police to temporarily confiscate weapons from such dangerous individuals. Several other measures, including banning assault rifles and raising the age to purchase certain firearms, are supported by majorities of U.S. adults, although they are not in the Senate bill. [...] The latest support for tougher gun laws exceeds readings in the immediate aftermath of massacres in 2017 at a Las Vegas concert and in 2012 at Sandy Hook Elementary School in Newtown, Connecticut. [...] There is broad, bipartisan public support for five specific measures aimed at curbing mass shootings like the one in Texas last month. Requiring background checks for all gun sales (92%) is the most popular of the proposals, but prohibiting those deemed a danger to themselves or others from purchasing guns (86%) also enjoys broad support. Similarly, allowing courts to order the confiscation of guns from dangerous individuals -- red flag laws -- is widely popular with the public (81%) and partisans of all stripes.