Mark Rich wasn't convicted for violating the constitution, as Arpaio was. Pardoning someone for violating the constitution is as direct of an affront to the constitution as there is. So, no. Mark Rich is a weak example.

"...the successful annihilation of organized crime's subculture in America would rock the 'legitimate' world's foundation, which would ultimately force fundamental social changes and redistributions of wealth and power in this country. Meyer Lansky's dream was to bond the two worlds together so that one could not survive without the other." - Dan E. Moldea