It wasn't the Russians who were spying on, and infiltrating Trumps campaign, it was the DNC, (Hillary Clinton), through the FISA warrant given out due to the fake Christopher Steele Russian dossier paid for by the DNC, (Hillary Clinton).
"A similar briefing was given to Hillary Clinton, they added. They said the briefings, which are commonly provided to presidential nominees, were designed to educate the candidates and their top aides about potential threats from foreign spies."
"That the Republican and Democrat nominee for president received a standardized briefing on counterintelligence is hardly a news story," said Raj Shah, a White House spokesman. "That NBC News hears about the contents of this classified conversation due to an inappropriate leak is a news story."
Leaked by another liberal news source paid for by the DNC? (Typical)