Late last month, the President's former campaign chairman, Paul Manafort, met privately with the Senate Intelligence Committee staff. Before dawn the following day, federal agents appeared at his house with a search warrant and seized documents and other materials. That's according to the Washington Post. Rosalind Helderman, who co-wrote the story, says the fact that officials used a search warrant could mean they didn't trust that Manafort would turn over all relevant documents or that they were going to move very aggressively.