Those around the president warned him that commuting Roger Stone was politically risky. But Trump, believing that his base would stick with him, did it anyway.
The US president previously said he could not see himself wearing a mask in public.
The Utah Senator was the first prominent voice in the Republican Party to publicly disavow the president's decision to erase Stone's prison sentence.
'An American president commutes the sentence of a person convicted by a jury of lying to shield that very President'
The Republican senator said the move was "unprecedented."