Officials in the offices of attorneys general in Pennsylvania, Washington and Hawaii said on Saturday they were evaluating what specific claims could be filed, and in which court.
A Palestinian family is greeted by protesters after the father was detained for hours at George Bush Intercontinental Airport in Houston.
A group of state attorneys general are discussing whether to file their own court challenge against President Donald Trump's order to restrict people from seven Muslim-majority countries entering the United States, officials in three states told Reuters.