The former British intelligence officer may have shown another memo to the special counsel's team.
The president is angry Senator Mark Warner tried to meet the Russia dossier creator—but so did Devin Nunes.
The hashtag "#ReleaseTheMemo" exploded on Twitter last Thursday.
Some of the document's seemingly wild claims have held up to a year's worth of scrutiny, even as many more parts remain disputed or have no evidence of being true.
In testimony released Tuesday, Glenn Simpson spoke about dossier author Christopher Steele.