Donald Trump is demanding Deputy Attorney General Rod Rosenstein and the Department of Justice investigate his claims that an FBI informant infiltrated the Trump campaign in 2016, leading to some to question whether he is crossing a constitutional line.

Retired federal judge Nancy Gertner, now a senior lecturer at Harvard Law School, and former U.S. Attorney Don Stern, who worked alongside Robert Mueller at the Justice Department and in private practice at Hale and Dorr, joined Jim Braude to discuss.