On Thursday morning, the Senate Judiciary Committee had a big get: Donald Trump Jr. entered the Capitol under cover and sat down with committee investigators probing the Trump-Russia scandal. The main focus of the gumshoes was the June 2016 meeting that Trump Jr., Jared Kushner, and Paul Manafort held with a Russian emissary who they were told would be dishing dirt on Hillary Clinton as part of a Kremlin effort to help Donald Trump win the presidency.