President Trump is already interviewing possible replacements for ousted FBI Director James Comey. NBC Justice Department correspondent Pete Williams reports on the shortlist. The president also signed an executive order establishing a voter fraud commission and is set to go on his first overseas trip next week to Saudi Arabia, Israel and the Vatican. Can he reset relations with world leaders?

Hillary Clinton and FBI Director James Comey both discussed the FBI's role in the 2016 presidential election, nearly six months after the fact. Vice President Mike Pence served as a crucial power broker on Capitol Hill during the negotiations over health care. President Trump is planning his first overseas trip as president to Saudi Arabia, Israel and Vatican City.

Sam Rodriguez, Jr., the pastor who delivered a prayer at Donald Trump's inauguration, is setting up a safe haven for undocumented immigrants at his Sacramento church. With uncertainty about Trump's immigration policies, Rodriguez says half a dozen families have sought refuge at his church. Also, President Trump delivered his first address to a joint session of Congress this week.

President Trump riled up conservative voters in a fiery speech at CPAC Friday where he took on his favorite foil -- the press. After one month in the Oval Office, is Trump changing the core of the Republican Party? All week long Republican lawmakers have seen voter frustration up close in boisterous town hall meetings across the country.

Late Friday, President Donald Trump signed an executive order to freeze refugee visas from several primarily Muslim countries. The new president is also expected to name his choice to fill the seat on the Supreme Court left vacant by the death of Antonin Scalia nearly one year ago. His list is reportedly down to three finalists, all white men.

The sudden death of Supreme Court Justice Antonin Scalia threw the government and the 2016 campaign trail into an uproar this week. Senate Republicans immediately vowed to block any nomination put forward by President Obama to succeed the conservative justice. Republicans hoping to succeed the president are hoping to turn November's election into a referendum on the Court.

Republican frontrunner Donald Trump drove the 2016 presidential debate this week after proposing to ban all Muslims from entering the U.S. A poll released this week showed 57 percent of Americans oppose the plan, and many of his Republican and Democratic opponents have announced their opposition. But Trump's support among Republican voters is only growing as voters appear to like his tough talk.

The threat of attacks at home can drive divisive and dangerous rhetoric. How do we keep our fear in check? Gwen Ifill explores that question with Ronald Brownstein of The Atlantic, Dalia Mogahed of the Institute for Social Policy and Understanding and Khaled Beydoun of the Barry University School of Law.

After being under strong pressure from conservatives in Congress to push for tighter government spending, House Speaker John Boehner announced his resignation this week. As he continued his tour around the U.S., Pope Francis came to Washington to address Congress on controversial issues including immigration and climate change.

Amid tensions over Syria and Ukraine, President Obama and Russian leader Vladimir Putin will meet in New York during the United Nations General Assembly on September 28. Alexis Simendinger of RealClearPolitics explains the challenges the two sides face trying to find common ground on their profound differences. Plus, what led to Wisconsin Gov. Scott Walker's downfall?