NEW YORK - American Express Co. and American Express Travel Related Services Co. Inc. (collectively, Amex) are not entitled to summary judgment on claims by the United States and 17 states that their rules preventing merchants from steering customers toward the use of another credit card violate federal antitrust law, a federal judge in New York ruled May 7 in denying Amex's motion for summary judgment (United States of America, et al. v. American Express Co., et al., No. 10-cv-4496, E.D. N.Y.; 2014 U.S. Dist. LEXIS 63169).