Citizens United v. Federal Election Commission

[Guderian]

26 states allowed corporate political speech in state and local races before this SC decision. I don't see political process being more corrupt or less democratic in those states because of that. Actually, people who are screaming doom is near are often completely ignorant of the fact that their own state allowed stuff that will now be allowed on federal level.

Look, this decision affects non-profit special interest groups more than it affects big businesses. Big business is unlikely to come out explicitly in favor of candidates because they don't want to piss off potential customers. They will use indirect means they used before (PACs, issue advocacy instead of candidate advocacy and what not). Reason why Democrats around the country are angry is because now NRA and other groups can haunt incumbents all the way to the election day. God forbid legislators actually have to answer for their voting records.

Also, it should be noted that from constitutional standpoint this case is a slam-dunk. SCOTUS minority whining about corporations not deserving free speech rights is 100% politically driven. I'll bet you a federal law that said corporate property can be seized without due process would be struck down 9-0.

[Guderian]

Is there any particular reason why President Obama couldn't theoretically pull an Andrew Jackson, and dare the Court to try to enforce its ruling? 

Supreme Court doesn't have to enforce anything, since this rulling doesn't call for any action to be done but for an action to stop. It's the FEC that is now toothless in enforcing McCain-Feingold. Even if Obama theoretically would order them to continue the practice, nobody would care since penalties can't be enforced anymore in federal courts.