Far from being discouraged by the Supreme Court decision upholding the federal health care overhaul, Republican governors are cranking up opposition to the law's implementation -- refusing to carry out two key provisions in the hope November's election will give the party enough votes to repeal it.

The list of GOP governors who have announced they will not move forward on the law has grown significantly since the high court ruling last Thursday.

At least 18 governors now say they are at least considering not expanding Medicaid -- effectively exploiting the one part of the ruling that came down in Republicans' favor. Previously, the law called on states to expand their Medicaid rolls and threatened to withhold money to those states that did not agree. The Supreme Court nixed that prescribed punishment, taking away the federal government's stick...