Washington, D.C. ? The Senate Ethics Committee said Wednesday that Idaho Sen. Larry Craig acted improperly in connection with a men’s room sex sting last year and had brought discredit on the Senate.

In a letter to the Republican senator, the ethics panel said Craig’s attempt to withdraw his guilty plea after his arrest at a Minneapolis airport was an effort to evade legal consequences of his own actions.

Craig’s actions constitute “improper conduct which has reflected discreditably on the Senate,” the letter said.

In an e-mailed statement, Craig told The Associated Press he disagreed with the ethics panel’s action.

Sen. Barbara Boxer, D-Calif., chairwoman of the ethics panel, declined to comment. The ethics panel took no further action against Craig.

Besides Boxer, the letter is signed by Sen. John Cornyn, R-Texas, the panel’s vice chairman, and Sens. Pat Roberts, R-Kan., Mark Pryor, D-Ark., Ken Salazar, D-Colo., and Johnny Isakson, R-Ga.