Why is trumps decision of not letting muslims and other caste enter their country regarded as a bad

If you are asking about Trump not letting Muslims and other caste enter OUR country then this would be my
The United States was built off of freedom. Freedom of speech, freedom of press. The United States was about helping people who couldn't hel themselves. It was considered the 'Promise Land' to some who come form third-world countries.

Hope this helps! Don't forget Brainliest! :)