How has Donald Trump permanently changed the presidency two years into his term? (Robert Costa)

As President Donald Trump approaches the two-year anniversary of his inauguration, it is indisputable that he has changed many of the norms of the office. On this week's TrumpWatch, Robert Costa, the host of “Washington Week” on PBS and a national political reporter for the Washington Post, reflects on the ways this President has reshaped the executive branch in his first two years in office.