(NewsNation) — Some of America’s most popular cereals are under investigation.

Texas Attorney General Ken Paxton has claimed General Mills’ cereals marketed for children are not as healthy as advertised — something that’s been on the radar of Health Secretary Robert F. Kennedy Jr. for a while.

Paxton accused General Mills of illegally misrepresenting some of its most popular cereals, such as Trix and Lucky Charms, as “healthy.” He said he wants the company to sell its products without synthetic dyes and additives, which it does in other countries.

“I’m proud to stand with the Trump administration and Secretary Kennedy in taking on petroleum-based synthetic dyes … to ensure that food products are not illegally and deceptively marketed by corporations,” Paxton said in a statement.

Under Kennedy’s leadership, HHS and the Food and Drug Administration have announced steps to ban certain synthetic dyes and food additives from the nation’s food supply by the end of 2026.

NewsNation reached out to General Mills for comment but did not hear back before publication.

Paxton also announced an investigation into popular cereal giant Kellogg earlier this month.