Today's gong show on Capitol Hill presented him with innumerable opportunities to defend that heavy duty proposition.

Indeed, he had a massive TV audience before which to fortify the entire foundation on which the Russia meddling/collusion story is based and on which a concerted effort have been made by a goodly part of the Washington establishment to invalidate the 2016 election on the grounds that the Kremlin threw it to Trump.

But nothing doing. Instead, Mueller ducked, dodged and demurred – hiding behind the words of his 448-page report. Yet the latter doesn't even attempt to "prove" this "central allegation" at all; it just asserts it based on purportedly classified information that the unwashed voters and most of their elected representatives are not allowed to see.