"It was a clear conflict of interest for USADA," Tygart said. "We had no hesitation in rejecting that offer."
Herman denied such an offer was made.
"No truth to that story," Herman wrote Tuesday in an email to the AP. "First Lance heard of it was today. He never made any such contribution or suggestion."
Tygart was traveling and did not respond to requests from the AP for comment. USADA spokeswoman Annie Skinner said Tygart's comments from the interview were accurate. In it, he reiterates what he told the AP last fall: He was surprised when federal investigators abruptly closed their two-year investigation into Armstrong and his business dealings, then refused to share any evidence they gathered.
"You'll have to ask the feds why they shut down," Tygart told the AP. "They enforce federal criminal laws. We enforce sports anti-doping violations. They're totally separate. We've done our job."