Bush says he believes report helps end ` ` steroid era '' in past . McNamee `` injected Clemens approximately four times in the buttocks over a several-week period with needles that Clemens provided , '' the report said . Bush 's lawyer : ` ` There has never been one shred of tangible evidence '' , author Mitchell says he has witnesses , paper witnesses . Players : Most players named in report chose not to cooperate with him .
Bush says he believes report helps end ` ` steroid era '' in past . Bush 's lawyer : ` ` There has never been one shred of tangible evidence '' , author Mitchell says he has witnesses , paper witnesses . Players : Most players named in report chose not to cooperate with him .