Republicans engaged in a tense back-and-forth during their conference lunch Tuesday over border talks with some openly questioning Senate Minority Leader Mitch McConnell’s strategy and others assailing colleagues for attacking the proposal before it’s even out. “I think everyone is questioning everyone’s strategy on this‚” said Sen. Joni Ernst‚ an Iowa Republican. “What’s the best way forward? I think that’s what people want to know and understand.” The fight illustrates the...