Wiretapping's True Danger

Julian Sanchez on wiretapping:

But focusing on the privacy of the average Joe in this way obscures the deeper threat that warrantless wiretaps poses to a democratic society. Without meaningful oversight, presidents and intelligence agencies can -- and repeatedly have -- abused their surveillance authority to spy on political enemies and dissenters.

Well: duh. I really have no problem with government wiretapping as a tool against terrorists. But it must have a judicial check and oversight on it.