Intentionally deceiving Congress is okay

At least with the DOJ, as it has done nothing about James Clapper's lying to Congress, which is a felony, punishable by up to 5 years in prison for each offense. The DOJ of previous administrations went after and convicted administration officials of misleading Congress as part of the Iran-contra scandal.  The Obama DOJ prosecuted Roger Clemens for deceiving Congress.  Is lying about taking steroids a greater crime than lying about spying?