There is a danger for liberals, however: What happens if a conservative gains the reins of power? If the executive branch can simply ignore implementation of any law a president doesn't like, how about Obamacare? How about the vast and growing entitlement system?
Liberals don't want to think about this possibility, because theirs is a politics of expedience rather than of principle. While conservatives worry about institutional power, liberals flit from position to position on the issue, depending who is in power. That's a recipe for governmental disaster. Because sooner or later, somebody no one likes will be in power -- and armed with a government free of all checks and balances, he or she will do something truly outrageous. That is, if President Obama hasn't already done so.