In my opinion one of the larger issues in the US is the lack of separation of church and state. Alot of the earlier campaigns/actions of the satanic temple were trying to combat this. Recently I support them even more because of Roe v Wade being overturned, they provide abortion access by asserting a religious liberty claim in states with strict abortion laws. The Tenets also overlap with my view of the world/morals like;
"Beliefs should conform to one's best scientific understanding of the world. One should take care never to distort scientific facts to fit one's beliefs."
"One should strive to act with compassion and empathy toward all creatures in accordance with reason."
"The freedoms of others should be respected, including the freedom to offend. To willfully and unjustly encroach upon the freedoms of another is to forgo one's own."
"The struggle for justice is an ongoing and necessary pursuit that should prevail over laws and institutions."
There are a few more but I don't want to spam too much.
Edit - (also forgot to mention, the Satanic Temple isn't associated with LaVeyan Satanism at all. Sorry for slow response dont check vlr often)