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.

A Texas secessionist warned the United States that Alex Garland's Civil War was "pouring gasoline on the fire" of "Texit" arguments, as he renewed calls for a referendum on the Lone Star State's split from the union.

A leading Texas nationalist group has warned Mexican President Andrés Manuel López Obrador it will begin actively supporting secessionist movements in his country in response to what it argues is his failure to control illegal migration into the Lone Star State.