They include the revelation of improper contacts between Saudi Arabian arms dealers and the former Conservative minister, Jonathan Aitken, which led to Aitken being jailed for perjury.
Republicans are also trying to change the subject to whether the memos show improper contacts between civil rights groups and committee Democrats.
The chief presiding judge resigned after reports, based on hacked Skype conversations, that the judge had improper contacts with a legal expert linked to prosecutors and the government.
One of the most memorable was the revelation of improper contacts between Saudi Arabian arms dealers and the former Conservative minister, Jonathan Aitken, which led to him being jailed for perjury.
Sessions's apparent ground for firing McCabe, on the eve of his retirement from the Bureau, thus perhaps depriving him of some or all of his retirement benefits, involves improper contacts with the news media.
The Union Square branch opened in October, sometime between the first trickle of the D.N.C.'s hacked e-mails and the resignation of Michael Flynn over improper contacts with the Russian Ambassador.
