Tom Sullivan, a candidate for a Colorado State Senate district, confers with his campaign manager Kris Grant while making campaign calls from Sullivan's home in Centennial, Colo., on Thursday, Sept. 20, 2018. Sullivan, whose son Alex was killed by James Holmes as he celebrated his 27th birthday in the Aurora theater, said he is encouraged that the state has maintained the post-Aurora ammunition limits and is calling for further gun control as he runs for a Colorado state House seat. Sullivan sees long-term promise in gun-control efforts by Parkland students and survivors of other mass shootings. (AP Photo/David Zalubowski)

Tom Sullivan, a candidate for a Colorado State Senate district, confers with his campaign manager Kris Grant while making campaign calls from Sullivan's home in Centennial, Colo., on Thursday, Sept. 20, 2018. Sullivan, whose son Alex was killed by James Holmes as he celebrated his 27th birthday in the Aurora theater, said he is encouraged that the state has maintained the post-Aurora ammunition limits and is calling for further gun control as he runs for a Colorado state House seat. Sullivan sees long-term promise in gun-control efforts by Parkland students and survivors of other mass shootings. (AP Photo/David Zalubowski)

Shortly after last year's shooting massacre on the Las Vegas strip, Ohio Gov. John Kasich convened a working group to explore possible reforms to state gun laws.

A Republican, Kasich wanted to be sure the panel's members clearly supported the Second Amendment. Yet it also was to be bipartisan, with members from across the political spectrum.

The panel's work accelerated after the Valentine's Day slaughter at a high school in Parkland, Florida, and it eventually produced a legislative package of what Kasich labeled "sensible changes that should keep people safer." The legislation was introduced by a Republican lawmaker in the GOP-dominated Legislature.

It went nowhere.

Among other objections, the Republican leadership raised constitutional concerns about a provision allowing courts to order that weapons be seized from people showing signs of violence.

"The way we put it together, the fact that you had people on both sides of the issue — I would have thought something would have happened," said

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