Sen. Rand Paul (R-Ky.) suggested last month that President Donald Trump revoke the security clearance of former CIA Director John Brennan over his potential to profit from his privilege despite no longer holding an official government position. Trump agreed, and revoked Brennan’s clearance on Wednesday, more than a month after Paul’s suggestion. And while officially Trump acted because Brennan used his status “to make a series of unfounded and outrageous allegations” and “wild outbursts” about the Trump administration, Paul explained on Fox News Thursday that Brennan’s clearance should have been revoked for “cause” — if that wasn’t the reason, at...