Sen. Ron Johnson (R-Wis.) said on Sunday said he’s questioning President Trump’s “endgame” in his approach to tariffs, saying the ongoing “volatility” isn’t good for businesses. “One thing I learned in the private sector is unpredictability can work pretty well in the negotiation, but the private sector — businesses want certainty. They want stability. They don’t like to see volatility,” Johnson said in an interview on NewsNation’s “The Hill Sunday.” “And, so, I’ve just been questioning exactly what’s the endgame here? What’s the strategy?” he continued. Johnson called himself an “unabashed free trader” and touted what he sees as the...