tweetybird

I'm not sure this exists in the USA but I thought I read about it once a while ago. In Canada we have a program where someone can sponser another person from a different country to come and be a live in caregiver and after 2 years is able to get landed immirant status. I was just wondering if there is a program like this in the states for either a temporary period of time or to get PR? Can you go through agency? thanks.