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Many Republicans are coming to the realization that Santos is a habitual liar and he cannot easily be controlled.  They could manipulate Trump.  On the other hand, Santos is a lying wildcard.  He could very easily vote with with Republicans on stuff they would win anyways, but give a thumbs down 👎 McCain style just for the lols.
Trump's campaign manager, financial manager, personal lawyer, and National Security Advisor were all prosecuted for felons in association with Trump's 2016 campaign. During the primaries Cruz, Graham, and Rubio all repeatedly called Trump a conman. Yet today the whole Republican party kneels before MAGA. 
It should surprise no one that Jr Republicans learned from Trump's example.