Read this Theresa May speech on immigration before her Trump visit
A hardline immigration leader (somebody whose work has strongly influenced top Trump adviser Jeff Sessions and Stephen Miller) told Axios recently to read some of May's previous speeches on immigration. He was majorly impressed.
The British PM enjoys significant goodwill among Trump's nationalist allies, particularly due to her tougher positions on immigration. She's no Nigel Farage, the UKIP leader and spearhead of the Brexit movement, but she's regarded warily as a potential friend of Trump's nationalist populist movement.
Key sections of a famous May speech in 2015 below: