No, Trump has not banned Spanish in the US
Some claim that speaking Spanish in the US will earn you a fine or even a prison sentence, as part of a measure known as 'La Ley del Silencio Hispanico', or 'The Law of Hispanic Silence'.
https://anessoft.com/blog/ar/macron-evoque-une-possible-reprise-du-dialogue-avec-vladimir-poutine
Some claim that speaking Spanish in the US will earn you a fine or even a prison sentence, as part of a measure known as 'La Ley del Silencio Hispanico', or 'The Law of Hispanic Silence'.