After lambasting GOP Sen. Mike Rounds of South Dakota in 2022 and vowing that he would never endorse the lawmaker again, President Donald Trump issued a full-throated endorsement of the incumbent Republican senator in a Truth Social post on Monday.Trump previously endorsed Rounds in 2020, but then excoriated the senator in 2022 after Rounds appeared on ABC's "This Week" and described the 2020 election as "fair.""'Senator’ Mike Rounds of the Great State of South Dakota just went woke on the Fraudulent Presidential Election of 2020," Trump declared at the beginning of a lengthy statement in January 2022.GOP SENATOR INVITES TRUMP