The hourlong discussion, before hundreds of labor union members and their families at the Texas AFL-CIO political convention, served as an early preview for themes Democrats hoping to overtake the Republican majority in the Senate in November are likely to stress.

Minnesota Reps. Angie Craig, Kelly Morrison and Ilhan Omar were denied access to detainees at a federal building outside Minneapolis on Jan. 10. The Department of Homeland Security has said the three Democrats did not comply with a new policy to give facilities seven days notice.