How did one of our great political parties become so ruthless, so willing to embrace scorched-earth tactics even if so doing undermines the ability of any future administration to govern?

The key point is that ever since the Reagan years, the Republican Party has been dominated by radicals — ideologues and/or apparatchiks who, at a fundamental level, do not accept anyone else’s right to govern.

Anyone surprised by the venomous, over-the-top opposition to Mr. Obama must have forgotten the Clinton years. Remember when Rush Limbaugh suggested that Hillary Clinton was a party to murder? When Newt Gingrich shut down the federal government in an attempt to bully Bill Clinton into accepting those Medicare cuts? And let’s not even talk about the impeachment saga.…

It’s an ugly picture. But it’s the truth. And it’s a truth anyone trying to find solutions to America’s real problems has to understand.

Anyone surprised by the venomous, over-the-top opposition to Mr. Obama must have forgotten the Clinton years. Remember when Rush Limbaugh suggested that Hillary Clinton was a party to murder? When Newt Gingrich shut down the federal government in an attempt to bully Bill Clinton into accepting those Medicare cuts? And let’s not even talk about the impeachment saga.