Michael McAuliffe, former prosecutor and former state attorney, told Newsweek the FBI's involvement is "well beyond alarming."

WASHINGTON, Aug 7 (Reuters) - The FBI will help Texas track down Democratic state lawmakers who left the state as part of a collective effort to thwart state Republican efforts to redraw congressional districts, Republican U.S. Senator John Cornyn said on Thursday.

The move to flee the state is part of a tactic to block a vote in the Texas House on redistricting. The proposal by Republicans would create five more Republican-leaning seats in the US House of Representatives, where the party holds a slim majority.