For two years the same response has been given by Democrats almost every time they are asked about impeachment – wait for Mueller.
It was Robert Mueller, the war hero turned special counsel, who would get to the bottom of what happened over Russian election meddling, they argued.
It was Mr Mueller, FBI director to both a Republican and Democrat president, whose bipartisan reputation would give his eventual findings real weight.
It was Mueller who could use the unique powers of a special counsel to force witnesses to testify, demand documents and even get answers from the president.
And now we know what Mr Mueller thinks – that Mr Trump and his campaign aides did not conspire with the Kremlin…