Today's Discussions...NBC's Julia Ainsley, former assistant US attorney Mimi Rocah, Bloomberg's Tim O'Brien, Demos' Heather McGhee, former Democratic Sen. Claire McCaskill, and former RNC chairman Michael Steele on the new report that the CBP compiled a list of reporters, attorneys, and activists to be stopped for questioning by border agents.WaPo's Robert Costa, former assistant US attorney Mimi Rocah, Bloomberg's Tim O'Brien, Demos' Heather McGhee, former Democratic Sen. Claire McCaskill, and former RNC chairman Michael Steele on the topic of pardons being of interest to 3 separate investigations into the president.Former assistant US attorney Mimi Rocah, Bloomberg Opinion's Tim O'Brien , Demos' Heather McGhee, former Democratic Sen. Claire McCaskill, and former RNC chairman Michael Steele on the uncharted territory we're navigating with this president as we await the sentencing of Trump's former campaign chairman Paul Manafort.