Details about the 18-year-old who killed 21 people, including 19 children, are part of an interim report released Sunday by a Texas House committee investigating the shooting at Robb Elementary School.
In congressional and local races across the United States, Republicans have seized upon calls by progressives to reduce police department budgets and other liberal criminal justice policies to paint almost all Democratic candidates as lenient on crime.
The justices are expected to rule by the end of this month in a challenge by two firearms owners and the New York affiliate of the National Rifle Association to that state's restrictions on carrying concealed handguns in public.
Nineteen students, all aged 9 to 11, and two teachers were killed by an 18-year-old gunman who burst into their fourth-grade classroom and opened fire with a high-velocity AR-15-style semiautomatic rifle.
The latest official details from the Texas Department of Public Safety on Tuesday's mass shooting differed sharply from initial police accounts and raised questions about security measures at the elementary school and the response of law enforcement.