Only Twitter said no, and pointed him to a blog post stating as "...company policy a prohibition against the use, by outside developers, of “Twitter data for surveillance purposes. Period.”
Facebook: No answer.
Microsoft: “We’re not going to talk about hypotheticals at this
point,” and a link to a company blog post that states that “we’re
committed to promoting not just diversity among all the men and
women who work here, but … inclusive culture” and that “it will
remain important for those in government and the tech sector to
continue to work together to strike a balance that protects
privacy and public safety in what remains a dangerous time.”
Google: No answer.
Apple: No answer.
IBM: No answer.
Booz Allen Hamilton: Declined to comment.
SRA International: No answer.
CGI: No answer.