Senate Intelligence Committee has expressed concerns that Jack Dorsey is favoring the Russian government over the United States government.
Senator Tom Cotton, CIA Director John Brennan, transcript from Senate Intelligence Committee hearings on June 2016:
https://www.cotton.senate.gov/?p=press_release&id=414
SENATOR COTTON: I want to discuss cooperation with our Intelligence Community from Silicon Valley, specifically Twitter and a company called Dataminr. According to the Wall Street Journal from May 8th, as well as some other media reports, Dataminr which is owned in part by Twitter and is the only company authorized to access the full real-time stream of public tweets that Twitter has, recently cooperated with the CIA. But just a few weeks ago ended that cooperation. So our Intelligence Community no longer has access to Dataminr's information, could you comment on these reports?
DIRECTOR BRENNAN: It appears as though Dataminr was directed to not provide its service to the CIA Intelligence Community and so therefore, we need to be able to leverage other capabilities in order to make sure that we have the insight we need to protect this country.
COTTON: So those reports are correct?
BRENNAN: I am not going to dispute them.
COTTON: The Wall Street Journal also reported that the CEO of Twitter, Jack Dorsey, directed Dataminr to stop the contract because he was worried about the "optics" of helping intelligence agencies. Do you believe that to be accurate?
BRENNAN: I do not know his motivation for any corporate decision he may have made, but I have no basis to dispute that.
COTTON: The Wall Street Journal also reports that among customers of Dataminr remains RT, Russia Today, a propaganda outlet of Vladimir Putin's government, which Putin has said is "trying to break the Anglo-Saxon monopoly on global information streams." To your knowledge, is Russia Today a client of Dataminr?
BRENNAN: I believe so, I'm not certain of that. But I don't have any information that they have been excluded from their services.