Republicans threatened to demand that Democratic presidential hopeful Biden and his son Hunter also testify, in a move aimed at damaging the party's possibly best chance of defeating Trump in election
Trump had on Wednesday told reporters in Davos, Switzerland, that he didn't want Bolton to testify before the Senate.
Government witnesses told the impeachment inquiry last year that Biden was carrying out official U.S. policy
President Trump used the powers of his office to solicit a foreign nation to interfere in our elections for his own personal benefit: Democrats
Political experts say that Trump is likely to emerge victorious as his Republican party enjoys majority in the Senate
Senators voted 53-47 along party lines to block three separate motions from Democratic leader Chuck Schumer to subpoena records and documents from the White House
It will be only the third time a president has endured an impeachment trial, after Andrew Johnson in 1868 and Bill Clinton in 1999.
But the no crime, no impeachment approach has been dismissed by scholars and Democrats, who were fresh off a trial brief that called Trump's behavior the worst nightmare of the country's founders
The Senate, controlled by Trump's Republican Party, will decide whether to convict and remove him from office
Here is more detail about the two articles of impeachment approved by the Democratic-controlled House
Trump lauded House Republicans for remaining in lockstep against impeachment as a few Democrats crossed the aisle to oppose it.
Ultimately, the law that gets upheld in a society is typically the law that resonates with it
Much of the support for Trump appears to be linked to positive feelings about the economy, which is in a period of strong growth, with record low unemployment.
The House Judiciary Committee began a second day of historic debate with the parties holding diametrically opposed views on the move to oust the president from office for misconduct
Hamstrung in the minority, Republicans won't have the votes to make changes without support from at least some Democrats
The House intelligence committee, which is conducting the impeachment hearings, has set a packed schedule of open hearings over the next week
The two leaders were to hold several hours of meetings, including lunch, before giving a joint news conference
In a letter to House Judiciary Committee, Jerrold Nadler, White House Counsel Pat Cipollone said it would be a "reckless abuse of power" for them to adopt the articles of impeachment
Four constitutional scholars will testify before the House Judiciary Committee in the first of a series of hearings to establish the gravity of Trump's alleged crimes
House Intelligence Committee Chairman Adam Schiff, who has led the 10-week-old investigation, said it was important to move quickly because the evidence of Trump's wrongdoing is "overwhelming"