According to Insider:

“The Trump administration has been clear: officials are not to comply with Congress’ demands for documents and witness testimony in its impeachment inquiry. But it looks like the people around President Donald Trump are done taking his orders, and the dam is bursting as a flurry of current and former officials step up to testify. Taken together, their revelations paint a damaging portrait of a concerted effort across the government to leverage US foreign policy in exchange for material that would personally benefit the president.”

Read more on this developing story here.