Correspondents Steven Portnoy, Steve Futterman and Steve Dorsey report on the final night of the Republican National Convention in Cleveland, where Donald Trump accepted the party's nomination. Correspondent Juliana Goldman on allegations that Melania Trump's convention speech had passages similar to a convention speech by First Lady Michelle Obama in 2008. And Political Director John Dickerson previews what to expect at this coming week's Democratic National Convention in Philadelphia. All that and more on the Weekend Roundup.