AUSTIN (CBSDFW.COM/AP) — A federal court has warned Texas Attorney General Greg Abbott to turn over evidence in the Voter ID case or the law will not be in effect by November.

In a sternly-worded order released late Monday, a three-judge panel in Washington said that if Texas doesn’t hand over key evidence in 48 hours, the July trial will be delayed further. Federal attorneys have repeatedly complained Abbott’s staff has used legal maneuvers to avoid turning over important documents and to keep lawmakers from testifying.

The judges are trying to decide if the Voter ID law complies with the Voting Rights Act, which bans some states with a history of racial discrimination — including Texas — from passing new election laws without federal approval. The Texas law requires voters to show a government-issued photo ID.

(Copyright 2012 by CBS Local.  The Associated Press contributed to this report.  All Rights Reserved.)