How to keep people interested in learning english?

Well, people should be aware that immigration is not ever easy - especially if you are not familiar with the dominant language of a country. Not only is it our dominant language (note: the USA does not have an OFFICIAL language - rather, English is a DOMINANT language), but it is also a dominant language throughout the entire world. Also, it has plenty of cognates with Spanish. Teaching true cognates definitely helps people stay motivated to learn a language because it helps them be able to quickly identify and translate phrases and words.

And I hate to say it, but immigration is still an issue in the United States so the more they’re able to prove them wrong, the better. Because it’s difficult to get a job here (employers often think applicants want to work because they need visa sponsorship, not because they want to actually work there), knowing the dominant language will DEFINITELY help - especially because so many places now prefer bilingual speakers.

A hard transition in, but they will have a definite upperhand over the typical US citizen!

Best of luck!