Roundtable Addition: Catherine Rampell is joining MSNBC as co-host of The Weekend’s 6 p.m. ET show. Formerly a Washington Post opinion columnist, Rampell joins Ayman Mohyeldin and a soon-to-be-announced third co-host on the roundtable show franchise, which will have two airings on Saturdays and Sundays when it launches in April. Jonathan Capehart, Eugene Daniels, and…Read More