The US needs it if they want people who are spooked my mRNA tech to get vaccinated. They also need it if they want a vaccine that is the mostly likely to be safe for use in children.
That's assuming they're not going to find out yet another excuse. Both vector vaccines and inactivated virus vaccines have faced just as much opposition.
The opposition to rushed or mandated COVID vaccination has close to zero ties to the “anti-vaccine” movement. Unless you watch CNN and MSNBC as your primary source of news, of course.
There's the Novavax one. It's been in testing about as long as Pfizer and is US based. It hasn't been pushed along with the help of a larger partner like the others. Maybe they will get there. I would have preferred a vaccine using more traditional technology due to the lack of information on the potential for autoimmune conditions in the future.
It's a similar mechanism, right? You're just using a virus to carry the genetic material, which also involves an extra transcription step in the cell (what is theorized as causing mutations in the spike and thus the stroke/clotting issues). Still quite different from the traditional inactive or protein based ones.
Transcription causes mutations in the spike that causes clotting issues? Do you have any idea how much transcription happens in your cells, every moment of every day? You need to reconsider where you’re getting your information.