In July 2004, the American Psychological Association issued a statement that DADT "discriminates on the basis of sexual orientation" and that "Empirical evidence fails to show that sexual orientation is germane to any aspect of military effectiveness including unit cohesion, morale, recruitment and retention." It said that the U.S. military's track record overcoming past racial and gender discrimination demonstrated its ability to integrate groups previously excluded. The Republican Party platform that year reiterated its support for the policy—"We affirm traditional military culture, and we affirm that homosexuality is incompatible with military service."—while the Democratic Party maintained its silence.