Yep. Hillary accused her of being a "Russian asset", I believe right after Tulsi torpedoed Kamala.
There were also suggestions that Tulsi was a Manchurian Candidate because she's a military veteran and doesn't show much emotion. Suggestions that she's brainwashed or under mind-control. All of this was based on absolutely nothing besides "she won't tow the line".
I think that formerly-brilliant-Comedy-Central-host-turned-globalist-shill-shitbag Stephen Colbert did the most damage to Tulsi. Right off the bat when she announced her candidacy, Colbert did a thing on the Late Show about how 14 years previous, Tulsi had said she didn't think gays should serve in the military. Basically used that to tar and feather her, because digging into people's pasts is how these people roll. He made a bunch of other digs at Tulsi over the campaign and basically made it clear that his viewers were supposed to view her as Persona Non Grata in the primary.