``I can reach no conclusion but that the league and the players union have misrepresented to me and to the American public the substance of MLB's new steroid policy,'' the Arizona Republican said in a letter to baseball commissioner Bud Selig and union head Donald Fehr. ``I expect the league and the players union to modify the new policy to comply with at least what was announced by MLB in January. To do anything less than that would constitute a violation of the public's trust, a blow to the integrity of Major League Baseball, and an invitation to further scrutiny of the league's steroid policy.''