On Tuesday, June 11, Jessica Biel joined Robert F. Kennedy Jr. to lobby against a California state pro-vaccine bill, and some of her fans are not happy.

The 65-year-old shared several photos of himself with the 37-year-old actress posing with activists and legislators in Sacramento, California. “Please say thank you to the courageous @jessicabiel for a busy and productive day at the California State House,” he captioned the post.

The duo wanted to make it clear that they did not support SB 276 — a California state bill that would limit medical exemptions from vaccinations without approval from a state public health officer. According to the California Legislative Information‘s website, “This bill would instead require the State Department of Public Health, by July 1, 2020, to develop and make available for use by licensed physicians and surgeons a statewide standardized medical exemption request form.”

Of course, many fans took to social media to share their thoughts on the matter. One person wrote, “Justin Timberlake brought sexy back, and his wife, Jessica Biel, wants to bring measles back,” while another echoed, “You know what will never get old? Jessica Biel’s kids.” A third person fumed, writing, “It’s shocking when a celebrity we admire supports a dangerous idea. But that’s why we don’t take health advice from movie stars. Jessica Biel is absolutely wrong about vaccines. Virtually all doctors and the entire medical community agree that vaccines are safe and save lives.”

The 7th Heaven alum is married to pop star Justin Timberlake, 38, and they have one child — 4-year-old Silas.

When Robert was asked about Jessica’s involvement, he skirted around the question. “I would say that she was for safe vaccines and for medical freedom,” he told The Daily Beast during a phone call.

The Washington D.C. native and the brunette beauty also revealed what their issues are with the proposal. “The biggest problem with the bill, which is something I think Jessica is concerned with is that a doctor who has made a determination — if he has found children in this state whose doctors have determined that they’re too fragile to receive vaccinations — this bill would overrule the doctors and force them to be vaccinated anyways,” he said.

However, the advocate had nothing to nice things to say about the mom of one. “She was a very effective advocate,” he said. “She was very strong and very knowledgeable. Extremely well-informed. An extremely effective advocate. She knows what she’s talking about. She’s upset about this issue because of its particular cruelty. She has friends who have been vaccine-injured who would be forced to leave the state.”

A representative for Biel did not respond to In Touch’s request for comment.

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