Advocates for Civil rights says new Texas law is "imposing religion" on children by distributing "In God We Trust" posters in Texas schools.
The state law, that took effect last year, requires all elementary and secondary schools in the state to "display in a conspicuous place in each building of the school or institution a durable poster or framed copy of the United States' national motto."
However this is only if the signs were donated to the school district or bought with private donations and given to the district.
Speaking to the Guardian, Sophie Ellman-Golan of Jews for Racial & Economic Justice (JFREJ) said: "These posters demonstrate the more casual ways a state can impose religion on the public.
"Alone, they're a basic violation of the separation of church and state. But in the broader context, it's hard not to see them as part of the larger Christian nationalist project."
Currently, the US dollar bills bare the phrase "In God we Trust."
Christians were instrumental in putting the phrase on coins during the civil war.
Republican Texas state senator Bryan Hughes, the author of the "In God We Trust Act", celebrated on Twitter, saying that the motto "asserts our collective trust in a sovereign God."