<sod >He has repeatedly called for tighter controls on immigration, includingÂ halting refugee admissions and banning immigrants from certain Muslim-majority countries.< eod>< sod > Â  He has repeatedly called for tighter controls on immigration, includingÂ halting refugee admissions and severely restricting travel and immigration from certain Muslim-majority countries through the controversial travel ban his first week in office in 2017, which triggered thousands of protesters in US airports.< eod>