With each new extra-constitutional action taken by President Obama (they’re slowly becoming too numerous to count) a chorus of impeachment talk inevitably rises then just as inevitably fades. Conventional wisdom is that hardline establishment Republicans or Tea Party-backed hyper-partisans would be the ones to lead the impeachment charge. But in this case, conventional wisdom is flawed. The ones who ought to be doing any and everything within their power to impeach and remove this president are our nation’s Democrats! Barack Obama is doing damage to the Democrat Party that, while not irreparable, may well take decades if not longer to...