The whistleblower who raised alarms about President Donald Trump's dealings with Ukraine and touched off the Democratic-led impeachment inquiry is willing to answer written questions submitted by House Republicans. That from the whistleblower's lawyer.

The disclosure of a second whistleblower threatens to undermine arguments made by President Donald Trump and his allies that a whistleblower complaint was improperly filed because it was largely based on secondhand information.

The disclosure of a second whistleblower threatens to undermine arguments made by President Donald Trump and his allies that a whistleblower complaint was improperly filed because it was largely based on secondhand information.