National Intelligence Director James Clapper has acknowledged answering -- during a senate hearing in March -- in the 'least untruthful manner' he could think of. This is an admission of having lied to congress. Under oath.
Our nation, our great experiment, our system of checks and balances, cannot function if we do not hold sworn officials accountable when they break their oaths.
President Obama, in light of this admission, you must call for James Clapper's resignation.