Several groups have issued a challenge to the Tennessee Supreme Court, asking them to block the Davidson County Sheriff’s Office ability to deport immigrants who are in the country illegally. The Southern Poverty Law Center (SPLC), the National Immigration Project of the National Lawyers Guild (NIPNLG), and the Law Offices of Elliott Ozment, joined by local attorneys from the firm of Sherrard & Roe issued the request Thursday. The 287-G program allows Davidson County sheriff’s deputies to identify, process and detain illegal immigrants who have been arrested for other offenses. But immigration attorney Elliott Ozment argues the sheriff’s office can’t enter into that agreement, because the agency gave up law enforcement powers in 1963. Ozment filed a lawsuit in January 2011 saying the 287(g) in Nashville violates state and local laws. “This agreement is illegal and enforcing it simply adds insult to injury for the Nashville community,” said Tom Fritzsche, staff attorney for the SPLC.