The Constitution prohibits Trump from pardoning Roger Stone: law professor – Raw Story

...Specifically, the Constitution states that the president has “power to grant reprieves and pardons for offences against the United States, except in cases of impeachment.” The Constitution’s framers added this caveat, writes Brettschneider, because they did not want a president to have the power to pardon people who helped him commit or get away with high crimes and misdemeanors. ...
https://www.rawstory.com/2020/02/the-constitution-prohibits-trump-from-pardoning-roger-stone-law-professor/

Democrats use Trump’s allies in their case against the president - The Washington Post

Rep. Jerrold Nadler used rhetoric from a key political ally of Trump's, a member of the president's cabinet and a member of Trump's legal team......
https://www.washingtonpost.com/politics/2020/01/23/democrats-use-trumps-allies-their-case-against-president/

Trump’s impeachment lawyers’ glaring legal error - Vox

That’s not what “high crimes and misdemeanors” means. ...
https://www.vox.com/2020/1/22/21075468/trump-impeachment-high-crimes-misdemeanors

Fox's Napolitano sees evidence to 'justify about three or four articles of impeachment against the president' | TheHill

Fox News senior judicial analyst Judge Andrew Napolitano said in an interview with Reason.com published Friday, he believes there could be 'three to four articles of impeachment" against President Trump, including bribery, high crimes and misdemeanors and obstruction of justice. ...
https://thehill.com/homenews/media/471725-foxs-napolitano-sees-evidence-to-justify-about-three-or-four-articles-of

Trump’s conspiracy to ‘undermine the electoral system’ is ‘the definition of a high crime’: Watergate reporter Carl Bernstein – Raw Story

On Thursday’s edition of CNN’s “Anderson Cooper 360,” Watergate veteran reporter Carl Bernstein laid into President Donald Trump for the Ukraine scandal during a discussion about the testimony of Deputy Assistant Secretary for European and Eurasian Affairs George Kent to House impeachment investigators.
https://www.rawstory.com/2019/11/trumps-conspiracy-to-undermine-the-electoral-system-is-the-definition-of-a-high-crime-watergate-reporter-carl-bernstein/