Here we go again -- the politics of personal destruction. Liberal operatives have launched an assault on Congressman Darrell Issa (Republican Congressman) to try to silence him and put an end to the investigations he has started to reveal what the Obama administration has been up to the last two years. Jake Sherman and John Bresnahan of Politico report: Democrats are understandably obsessed with Darrell Issa -- he's built himself up as a one-man investigative machine aimed straight at the Obama presidency. But a handful of liberal political operatives in California -- including a former Hillary Clinton hand - are taking...