Reuters: U.S. top court rejects bid to revive Wisconsin governor probe
Brendan Fischer, a lawyer with the Campaign Legal Center that advocates strong enforcement of campaign finance laws, said the justices' move did not endorse Walker's actions.
"Governor Walker secretly told out-of-state donors they could support him by secretly giving to Wisconsin Club for Growth which, he emphasized, could accept corporate contributions without limit," Fischer said.
"Walker's campaign adviser controlled how Wisconsin Club for Growth spent the money, and after winning re-election, Walker signed legislation advancing the interests of the secret donors."