The nation’s economy won’t need additional immigrants for another 10 years, Rep. Paul Ryan told a friendly audience of Texas business executives. “We will have labor shortages in — not right now — but in the near future, in, say, a decade,” he predicted during a taped appearance at the Hispanic Chamber of Commerce in San Antonio. Paul’s admission may be a relief for GOP legislators, who are facing conflicting pressures on immigration from voters who are worried about jobs, from business donors eager for new low-wage workers, and from the Democrats’ 2014 campaign strategy of economic populism. The Jan....