June 29 (UPI) -- A Senate ethics panel has dismissed misconduct allegations against Sen. Ruben Gallego after an investigation, the Arizona Democrat's office said Monday. The six-person, bipartisan Senate Ethics Committee sent Gallego a letter dated June 26 (obtained by NBC News ) in which members said they found no evidence that his actions "violated federal law, Senate rules or related standards of conduct." The letter said the complaint , filed by Rep. Anna Paulina Luna, R-Fla., alleged "