“You cannot rape your spouse. And there’s very clear case law.” says Trump's counsel

[JDPriestly]

10. Wikipedia and the California Code on this question.

Marital rape in United States law, also known as spousal rape, is non-consensual sex in which the perpetrator is the victim's spouse. It is a form of partner rape, of domestic violence, and of sexual abuse. Marital rape is today illegal in all 50 US states.

The legal history of marital rape laws in the United States is a long and complex one, that spans over several decades. The criminalization of marital rape in the United States started in the mid-1970s and by 1993 marital rape became a crime in all 50 states, under at least one section of the sexual offense codes. During the 1990s, most states differentiated between the way marital rape and non-marital rape were treated. The laws have continued to change and evolve, with most states reforming their legislation in the 21st century, but differences remain in some states, in particular in South Carolina.

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https://en.wikipedia.org/wiki/Marital_rape_%28United_States_law%29