If you think that there is "equality under the law" in these United States,  Comey's testimony puts that assertion six feet under.  He admitted he let AG Loretta Lynch make him describe the Hillary server criminal investigation as a "matter",  which was political spin which Comey willingly participated in.  That colors his testimony with it always being in shades of grey,  no black nor white.

Why didn't Comey tell Trump that his askance was wrong,  perhaps illegal,  and he,  Comey, wouldn't play the game?   Sen Feinstein did ask.  Comey's answer was weak.  

McCain was trying to ask how Comey could close the Russian interference and Hillary avoiding scrutiny with a personal email server which was hacked,  replete with classified documents,  yet keep open the Trump investigation into the same issues.?  

 McCain left too much brain in the  Hanoi Hilton,  and it was a garbled question  at best.   At least the country got to see how political the FBI was under Comey.  Good he was fired.