Saying Texans deserve to know more about the illegal immigrants who were released in the state this month through a federal decision tied to sequestration, Sen. John Cornyn, R-Texas, demanded a hearing about the action Thursday.In a letter to U.S. Sen. Chuck Schumer, D-N.Y., the chairman of the Senate Judiciary Committee's Immigration, Refugees and Border Security Subcommittee, Cornyn said Texans have a right to know more about those released by Immigration and Customs Enforcement.At least "700 of these detainees were directly released into Texas. We also know that at least 30 percent of these released detainees had criminal records -- potentially including aggravated assault, financial crimes, theft, larceny, drug offenses, drunk driving, and domestic violence," wrote Cornyn, the ranking Republican on the subcommittee."Though some have suggested that these released criminals were not dangerous offenders, the victims of assault, drug crimes, theft, drunk driving, and domestic violence would strongly disagree."ICE said the release of illegal immigrants across the country was a cost-cutting measure brought on by sequestration. The agency said it released only those who were deemed low-risk.In his letter, Cornyn says more than 2,200 immigrants have been released nationwide.The letter comes just weeks after Gov. Rick Perry asked ICE Director John Morton to disclose more information about the release."Aside from allowing this federally sponsored jailbreak to occur, ICE has also failed to provide any information regarding the number of detainees released, their countries of origin, locations where these individuals have been released, and the reasons they were detained despite repeated requests from my office," Perry wrote March 4.Despite the criticism, advocates have lauded the move as timely and compassionate. Detention Watch Network, a coalition of advocacy groups focused on reforming the immigration detention system, wrote to leaders in Washington, D.C., that the release of noncriminals and low-level offenders was a positive first step."ICE's decision to reconsider when detention is necessary and to start releasing people from detention when there is no need to detain, is a step in the right direction on many levels," the coalition wrote."First and foremost, it means fewer people have to endure the indignities of imprisonment. Substandard medical care, physical, verbal and sexual abuse, lack of outdoor recreation, lack of access to legal services, and limited contact with family or the outside world, are just some of the hardships that pervade the experience of being detained."