The Brooklyn Democrat, who is in line to be speaker should his party win the House, has drawn ire from some progressives for huddling with the president’s son-in-law.

A plan to lower tariffs on imported beef and trade tensions with Canada have compounded some G.O.P. worries about a central issue in the midterms.

President Trump’s son-in-law and the man in line to be speaker of a Democratic-led House discussed how Democrats and the administration could work together.