Republican Senate gun negotiator walks out of talks

The lead Republican negotiator for what would be the US Senate's first gun control bill in a generation has walked out of talks with Democrats.

Texas Senator John Cornyn has played a key role in drafting the framework of a proposed firearms bill following mass shootings in Texas and New York.

Leaving Washington, he said: "I'm through talking."

The plans include tougher checks for buyers under the age of 21 and cracking down on illegal gun purchases.

The proposals have shown some rare cross-party cooperation on the issue of gun...