(Reuters) -A U.S. appeals court on Wednesday kept on hold a Republican-backed Texas law that would let state authorities arrest and prosecute people suspected of illegally crossing the U.S.-Mexico border – a statute that President Joe Biden’s administration has argued intrudes on the authority of the federal government. A panel of the New Orleans-based 5th U.S. Circuit Court of Appeals in a 2-1 ruling denied a request by Texas to let the law take effect while the state’s appeal of a judge’s ruli