Well, I asked for something official to back up this claim; what I got was a
link to a Left-wing website.
Apparently, according to the site, the WI Legislative Fiscal Bureau that some hidden provision buried deep in the budget bill would give Walker's administration unprecedented power to make changes to Medicaid and so forth. No links to official text of the bill, no quotes from the bill, just a claim.
Is it me or is this just more of the same old, same old from the Left? Whip up fear amongst Democratic citizens with scare-mongering and the always-reliable stereotype of Republicans as evil, pollution-happy, money-hungry misanthropes. Same as when I began taking a serious interest in politics in the early-mid '90s; different year, same bullshit.