Texas is moving again to erase the credibility of the federal lawsuit against its new voter ID law.The Department of Public Safety and the office of Secretary of State John Steen announced Tuesday that they will set up mobile stations at neighborhood centers, subcourthouses, health centers and other public buildings across the state to make it easier for people to obtain free election identification cards if they don’t have a driver’s license or other acceptable form of voter ID.Two weeks ago, DPS said it would open many of its driver’s license offices on Saturdays to issue the election identification cards.Free cards must be available under the 2011 law that says all in-person voters must show an approved form of photo identification. People who vote by mail are not required to show voter ID.The first four mobile stations are to open Monday in Fort Worth. Others are set to begin operations Tuesday in El Paso and Harris counties.Two of the Tarrant County locations, all scheduled to be open from 8 a.m. to 5 p.m., are in Fort Worth: the health department offices at 1101 S. Main St. and the Southwest Subcourthouse at 6551 Granbury Road. The other two are Arlington’s South Service Center at 1100 SW Green Oaks Blvd. and the Gertrude Tarpley-JPS Health Center at 6601 Watauga Road in Watauga.In June, Democratic U.S. Rep. Marc Veasey of Fort Worth joined seven other plaintiffs in filing a lawsuit in a Corpus Christi federal court, saying the Texas law would disenfranchise thousands of voters. In August, U.S. Attorney General Eric Holder also sued to block the law.Last year, a three-judge federal panel in Washington said the Texas law would have a disproportionately negative effect on Hispanic and African-American voters. That ruling was set aside in June when the U.S. Supreme Court said Congress must rewrite a key portion of the Voting Rights Act.The basic building block of the three-judge panel’s ruling was that there are too many places where it’s too difficult or expensive for people to get to the locations where they can get a free approved voter ID card.Steen and the DPS are pre-empting that argument with the mobile stations and Saturday hours. Mobile stations in rural areas are also planned.Another step would also help: Reimburse needy people who have to pay for background documents (such as a $22 copy of their birth certificate) needed to obtain the free voter ID.