Texas could have its own military "within weeks" if Governor Greg Abbott dramatically increased funding and recruitment for its State Guard, a leading independence campaigner said.

A campaign group pushing for Texas to leave the United States and become a fully independent nation has suggested the Lone Star State wouldn't have to take a share of America's national debt if it secedes from the Union.

For Texas secessionist Daniel Miller, the hit movie Civil War is something of a how-to guide. Miller says writer and director Alex Garland's ominous dystopia has tapped a nerve.