On Wednesday, it did.
The anti-doping group released a report on its case against Armstrong - a point-by-point roadmap of the lengths it says Armstrong went to in winning seven Tour de France titles USADA has ordered taken away.
It details the way those men and others say drugs were delivered and administered to Armstrong's teams. It discusses Armstrong's continuing relationship with and payments to a doctor, Michele Ferrari, years after Ferrari was sanctioned in Italy and Armstrong claimed to have broken ties with him.
It presents as matter-of-fact reality that winning and doping went hand in hand in cycling and that Armstrong's teams were the best at getting it done without getting caught. He won the Tour as leader of the U.S. Postal Service team from 1999-2004 and again in 2005 with the Discovery Channel as the primary sponsor.
The report also uses Armstrong's own words against him.
"We had one goal and one ambition and that was to win the greatest bike race in the world and not just to win it once, but to keep winning it," the report reads, quoting from testimony Armstrong gave in an earlier legal proceeding.
But, USADA said, the path Armstrong chose to pursue his goals "ran far outside the rules." It accuses him of depending on performance-enhancing drugs to fuel his victories, and "more ruthlessly, to expect and to require that his teammates" do the same.
Armstrong did not fight the USADA charges, but insists he never cheated.
Armstrong's attorney, Tim Herman, called the report "a one-sided hatchet job - a taxpayer-funded tabloid piece rehashing old, disproved, unreliable allegations based largely on axe-grinders, serial perjurers, coerced testimony, sweetheart deals and threat-induced stories."
USADA Chief Executive Travis Tygart insisted his group handled this case under the same rules as any other.
He pointed out that Armstrong was given the chance to take his case to arbitration and he declined, choosing in August to accept the sanctions instead.