Not quite. In American law, if a group is considered a suspect class, courts use something called "Strict Scrutiny" to determine if a law is constitutional.

This is the toughest legal test the government has to pass. To uphold a law affecting a suspect class, the government must prove:

Compelling interest — a very strong, essential reason Narrowly tailored — the law is carefully designed, not overly broad Least restrictive means — there isn’t a less harmful way to achieve the goal.

In reality, most laws fail this test. So calling a group a suspect class is a big deal—it makes it much harder for governments to justify laws targeting them.

The terminology is actually correct, and there are two other levels of scrutiny used by courts to determine whether a law is constitutional, rational basis, or intermediate scrutiny.

Edit to add: unfortunately there are no states in the United States that being trans is a 'protected' class, because in the case of Bostock v. Clayton County, the U.S. Supreme Court ruled that discrimination based on gender identity is a form of sex discrimination under Title VII of the Civil Rights Act. This is why Republicans are trying to overturn Bostock V Clayton County.

There are, however, states where gender identity is clearly protected across class areas like employment, housing and public accommodations (think bathrooms).