California Attorney General Xavier Becerra touched off the escalating war of words on Thursday by adding four states to a list of places where California-funded or sponsored travel is prohibited, under a state law that restricts the expenditure of state funds to places that "authorize discrimination" against people due to their sexual orientation or gender identity.
Texas Attorney General Ken Paxton's Communications Director Marc Rylander says when they heard the news about the California to Texas state-sponsored travel ban, they just rolled their eyes and kept going.
Alabama and Kentucky have also passed similar anti-LGBTI laws concerning adoption and student organizations being able to discriminate against LGBTI students.
The ban includes some exceptions, such as travel for law enforcement, existing contractual agreements and mandatory job training - but only for "required" travel.
The law, which took effect in January, applies to California state employees, including those who work for public-education institutions like schools within the University of California system, the San Francisco Chronicle said.
The original CA law, AB 1887, came into being late a year ago following the much publicized and controversial North Carolina law regarding the use of gendered restrooms by transgender people - the passage of which led to multiple companies and organizations, including the National Basketball Association and the SF Symphony, canceling plans in the state.
South Dakota Governor Dennis Daugaard is responding to a move by California to prohibit state-funded travel to South Dakota following passage of SB 149. "That's why when California said we would tolerate discrimination against LGBTQ members of our community, we meant it".
The California travel ban is far from the only time officials from the two states have clashed.
The ACLU's Kathy Miller said: 'These religious refusal bills radically redefine a fundamental right by allowing religion as a justification to discriminate or refuse to obey laws you don't like. Some travel to these states is still allowed, including travel for state contracts signed before 2017.
The ban was announced on Thursday by California Attorney General Xavier Becerra and is an extension to Assembly Bill No 1887.