Ex-Ukraine envoy testified he was "never asked to do anything" wrong
Kurt Volker, the former special representative to Ukraine, said he feared the U.S.-Ukraine relationship was "getting sucked into a domestic political debate"
Former and current White House officials unhappy with Mick Mulvaney
They're critical of his handling of the impeachment inquiry, his leadership of the White House staff, and communications overall
Read the whistleblower's memo about Trump's Ukraine call, as described to CBS News
The memo, dated July 26, is based on a conversation the whistleblower had with an unnamed White House official who listened to the call
EPA announces repeal of Obama-era clean water regulation
The 2015 rule spells out protections for large and small U.S. bodies of water. Environmentalists fear its replacement could result in more pollution
Trump addresses abrupt departure of his personal assistant Madeleine Westerhout
At an off-the-record dinner with reporters earlier this month, Westerhout discussed the president's children
Trump avoids climate change in speech on environmentalism
A White House fact sheet provided to CBS News ahead of his speech didn't mention climate change, and the president stuck to that
Biden is "excellent" presidential candidate says Jack Reed
The Rhode Island Democrat weighed in on Biden's White House bid and discussed the ramifications of the Mueller report on "The Takeout" this week
Trump is considering appointment of immigration czar
One of the top contenders for the new position could be former Kansas Secretary of State Kris Kobach, an immigration hawk
MLB announces Cuban players won't have to defect to play in U.S.
The league has reached an agreement with the Cuban Baseball Federation -- but the Trump administration could still intervene
John Bolton unveils new Africa strategy based on "America First" principles
The national security adviser says the new strategy will focus on enhancing trade ties, combating terrorism and cutting back on aid programs the Trump administration deems inefficient
Sound from Mars heard for first time on Earth
NASA's InSight Mars lander, which touched down on Mars last week, captured a bassy vibrating rumble deflecting off the lander's 7-foot solar panels
Interior Dept watchdog investigating Zinke is still on the job despite her rumored ouster
Current Acting Inspector General Mary Kendall is still in her position even as administration seeks to replace her
Trump files 2017 taxes following 6-month extension
Since launching his campaign in 2015, Mr. Trump has refused to release his tax returns from any year
Trump calls Omarosa a dog -- but she's not alone
The president routinely uses social media to insult perceived opponents, and calling them a "dog" is one of his preferred barbs
Goals uncertain for North Korea summit between Trump and Kim Jong Un
Usually, officials from both sides reach an agreement before leaders meet. This time the outcome will largely depend on the meeting itself and the chemistry between Kim and Trump