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Lace Armstrong still lying, says USADA chief

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Lace Armstrong still lying, says USADA chief

Lace Armstrong still lying, says USADA chief
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Lace Armstrong still lying, says USADA chief

CBSTV Videos 2:25 mins

U.S. Anti-Doping Agency director Travis Tygart tells Scott Pelley on "60 Minutes" why he thinks Lance Armstrong is still lying.

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