While matching your programme to Medical Schools or Hospitals, USMLE scores do matter. The factors that are considered for Matching are:

• High USMLE scores
• Board scores of other residents in the programme vs the no.of attempts
• Any Clinical experience in the US
• If the programme you are applying for is open to IMG Candidates
• How many years out of medical school are you
• Strong letters of recommendation
• Languages that you speak

And to get place in a good hospital, these are the factors that you need to look into. And ofcourse the rank of the college matters but your placement or matching to that college depends on the above mentioned factors.

Applied to enough IMG friendly hospitals