You're calling a record like THIS, that of a "RINO?" BS.
http://ontheissues.org/Senate/Chuck_Grassley.htm
Yes, he’s a rino. A swamper. A kabuki actor. A professional liar. A reach around artist.
If you waterboarded him to find out who he voted for in 2016, it would be a safe bet that he voted for Hillary. Most of the ‘republican senators’ did.