President Donald Trump’s foreign beef imports have backfired on Republican South Dakota Sen. Mike Rounds’ reelection campaign, South Dakota cattle ranchers told the Daily Caller News Foundation. Rounds faces a competitive race against independent South Dakota Senate candidate Brian Bengs in a state that Trump won by nearly 30 points in 2024. South Dakota ranchers told the DCNF that Trump’s import of 300,000 metric tons of foreign-raised beef and…