"It cost $3500 to replace them out of pocket with 'amazing' plantinum (sic) level insurance," he wrote. "Healthcare shouldn't be for profit ever, it's a human right."

Shortly after his announcement, Van Ness posted to Twitter a video of Warren calling him to thank him for the endorsement. "I'm glad we're going to be in this fight together, side by side," the Massachusetts senator is heard saying on speakerphone.

"Health care is a basic human right, and we fight for basic human rights," Warren said. Van Ness said he wanted to work with Warren to de-stigmatize the idea of universal health care, and asked Warren to tell him how he could best be of service.