Yes and no.
There were laws against yellow journalism up until Obama overturned them.
Discussion
They shouldn’t exist. Who gets to decide what “yellow journalism” is? Because I’d venture to bet any decent science critical of Covid vax instantly falls into that category.
Reinstating this would be a good start: The relevant legal change during the Obama administration concerns the Smith-Mundt Act of 1948.
The Original Smith-Mundt Act
The Smith-Mundt Act was enacted during the Cold War to authorize the U.S. government's foreign information programs, such as Voice of America. A key provision of this act was a domestic firewall that prohibited the dissemination within the United States of materials produced by the State Department for foreign audiences. The primary concern was to prevent the government from turning its own propaganda machinery on its citizens.