Washington (AFP) – A US senator was resting in hospital Wednesday after suffering a stroke from which he is expected to recover fully, although it threatens to throw the Democrats’ agenda into disarray until his return. Ben Ray Lujan, 49, underwent brain surgery to relieve swelling late last week and remains hospitalized, his office said, with no clear timetable for how long he will be sidelined. As he recovers, Democrats effectively lose their advantage in the Senate, which is split 50-50, with Vice President Kamala Harris wielding the tie-breaking vote. Unlike in the House, senators must vo…