After more than a decade of struggle, the House passed a bill requiring most group health plans to provide more generous coverage for treatment of mental illnesses, comparable to what they provide for physical illnesses. The vote was 268 to 148, with 47 Republicans joining 221 Democrats in support of the measure. The Senate has passed a similar bill requiring equivalence, or parity, in coverage of mental and physical ailments. Federal law now allows insurers to discriminate, and most do so, by setting higher co-payments or stricter limits on mental health benefits.