"If the spying was inappropriate, that means we may have an entirely illegitimate investigation," Rudy Giuliani said of special counsel Robert Mueller's probe.
Members of both parties say the Chinese telecom giant poses a national security threat.
"All victims of assault and harassment deserve to be heard," he said. "But it is not right to equate horrific incidents of sexual assault with misplaced compliments or humor."
A campus gynecologist was accused of sexually abusing dozens of students, some of whom have filed lawsuits.
The shooting in Noblesville, Indiana, happened a week after the Santa Fe High School massacre.