Willing to testify if subpoenaed shouldn't really be newsworthy. I mean, I'd be willing to testify is subpoenaed (the fact that subpoenaing me would be a complete absurdity as I have no knowledge of anything that went on the Trump White House beyond what I read here, notwithstanding). Not willing to testify if subpoenaed would mean something, something like, "Send the Sargent-at-Arms of the Senate to clap me in irons! I won't tell you a thing!" That would be newsworthy. Saying you'll comply with a hypothetical subpoena, not so much.