I have no idea who he is or is he the person Vivek is talking about, but here what msm said after the endorsement.
"Steve King, the nine-term former Republican representative from Iowa with a history of incendiary, racist rhetoric, endorsed Vivek Ramaswamy for president in his home state on Tuesday."
"King had become effectively shunned by the larger Republican Party after saying in a 2019 interview: "White nationalist, white supremacist, Western civilization -- how did that language become offensive?"
King, the controversial former Republican lawmaker, alienated many members of his own party
www.politico.com