guns

Updated at 1:25 p.m. ET

The National Rifle Association is suing the city and county of San Francisco and its Board of Supervisors over a unanimous vote to designate the NRA a domestic terrorist organization. The pro-gun group says lawmakers are trying to discriminate against people "based on the viewpoint of their political speech."

A House committee will take up legislation on Tuesday aimed at preventing mass shootings, as lawmakers and the White House move to respond to a recent spate of attacks across the country.

The bills being considered by the House Judiciary Committee include measures that would limit access to high-capacity gun magazines and block any person convicted of a hate crime from obtaining a firearm.

Walmart is dramatically cutting back sales of ammunition and asking shoppers to refrain from openly carrying firearms in its stores.

These are a few of the changes Walmart is making to its gun-sales policy following two shootings a month ago at two Walmart stores within one week.

"As a company, we experienced two horrific events in one week, and we will never be the same," Walmart CEO Doug McMillon wrote to employees on Tuesday.

The shooter who opened fire after a routine traffic stop Saturday in Texas, killing seven people and injuring 22, was fired just hours before the deadly shooting.

Seth Aaron Ator, 36, who lived in the Odessa area, had been fired from his job at Journey Oilfield Services after a disagreement, according to Odessa Police Chief Michael Gerke. The shooting rampage, which appears to have been random, ended when Ator was killed by police.

Updated at 3:22 p.m. ET

The death toll from a mass shooting carried out by a gunman in the West Texas cities of Midland and Odessa has risen from five to seven, and 22 others remain injured, officials said on Sunday.

Authorities said a man armed with an "AR-type weapon" was killed by police just moments before heading toward a crowded movie theater, preventing what investigators said could have been an even deadlier rampage.

Police say a man hijacked a postal truck and began shooting people at random in the Midland and Odessa areas of Texas on Saturday, leaving at least five people dead and 21 others injured.

The chaotic afternoon began with a traffic stop and ended with police shooting the gunman dead. Odessa Police Department officials say three law enforcement officers were shot: an Odessa police officer, a Midland police officer and a state police officer.

Police in Mobile, Ala. have arrested a 17-year-old in connection with a shooting incident that injured 10 teenagers at a high school football game Friday evening. The suspect has been charged with nine counts of attempted murder.

The Church of Jesus Christ of Latter-day Saints has prohibited nearly all parishioners from carrying lethal weapons on church property.

Prior to the shift in policy, having a weapon on church grounds was considered "inappropriate."

The change was revealed in an update to a handbook sent electronically to local church leaders over the weekend.

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The lawmaker behind a petition to stop permitless carry from taking effect November 1 says he’s optimistic about having enough signatures.

State Representative Jason Lowe says supporters are circulating more than 4,000 petitions, which could possibly generate 76,000 signatures.

A disgruntled cook who threatened to carry out a mass shooting and had assembled an extensive stockpile of high-powered firearms, ammunition and tactical gear has been arrested, authorities in Long Beach, Calif., said.

Police arrested Rodolfo Montoya, 37, at his Huntington Beach residence Tuesday after he told a co-worker at the Long Beach Marriott that he was planning to "shoot up fellow employees and people coming into the hotel," said Police Chief Robert Luna during a news conference.

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