This week's "Face the Nation with Margaret Brennan" features key insights into the Trump administration's policies. Ambassador Jamieson Greer, President Trump's top trade negotiator, will discuss the implications of the recently imposed tariffs on major U.S. trading partners. Additionally, Dr. Mehmet Oz, administrator of the Centers for Medicare & Medicaid Services, will explain the impact of President Trump's "big, beautiful bill" on American healthcare and social security.