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Democratic senators have tense exchanges with Trump's pick for Education Secretary, Betsy DeVos, during her confirmation hearing.

Linda Sarsour, Tamika Mallory, Carmen Perez, and Bob Bland are leading what could be the largest demonstration following a presidential inauguration in U.S. history. Here is the story behind the march.

Vice President-elect Mike Pence says Republicans do not yet have a bill to replace Obamacare, but that he has "seen a lot of great ideas" and transition officials and GOP leaders are "getting very close" to having a replacement.

François-Philippe Champagne tells Richard Quest that the US's biggest trading partner is open to a review of NAFTA, and why the neighboring countries have a a very integrated economy.

Scott Pruitt, Donald Trump's pick to lead the Environmental Protection Agency, broke with the President-elect and said he doesn't believe climate change is a "hoax" and that he'd recuse himself from existing lawsuits against the agency.

When asked what advice he's given Donald Trump, President Obama says he told the President-elect the office is of such magnitude that it's not a job you can do by yourself.

The Chairman of JPMorgan International tells Richard Quest why politicians who call for fair trade deals need to provide details.

President Barack Obama opened his final news conference with a heartfelt thank you to the media.

President Obama opens his final press conference with a heartfelt thank you to the press.

President Barack Obama talks about his decision to commute the sentence of Chelsea Manning during the final news conference of his presidency.

Former U.S. Assistant Secretary of State for Public Affairs P.J. Crowley gives his take on President Obama's decision to commute Chelsea Manning's sentence.

Governor Nikki Haley answers questions about Russia and the UN during her confirmation hearing for US Ambassador to the UN.

CNNTech Correspondent Samuel Burke sits down with Microsoft CEO Satya Nadella to discuss the company's plans for its digital assistant Cortana.

Austrian chancellor Christian Kern reacts to Theresa May's Brexit speech and warns that the EU needs "to restore the political center."

CNNTech Correspondent Samuel Burke sits down with Microsoft CEO Satya Nadella to discuss the company's plans for its digital assistant Cortana.

Former Treasury Secretary Larry Summers explains to Richard Quest how protectionist policies could hurt American consumers and producers.

CNN's Elise Labott talks to US Ambassador to the UN Samantha Power about Russia's influence on the 2016 election and US relations with the country.

Blackwater founder Erik Prince spoke to CNN's Becky Anderson about his proposal to solve Europe's migrant crisis and Blackwater's work in Iraq and Afghanistan.

Only one in every 2.5 million births results in conjoined twins -- but how do doctors deal with this outcome? Vital Signs investigates.

After a 27 hour operation, conjoined twins Jadon and Anias McDonald were separated by Dr James Goodrich and his team at the Children's Hospital at Montefiore Medical Center. What does their future hold?