Does it imply that you are "willing to relocate to the United States"? To me it just indicates that you aren't attached to your current location.
The option itself just says "
[X] I'm willing to relocate". Below, you can indicate locations, on each of which you can check "
I have the legal right to work here immediately" (relieving any potential immigration concerns for potential employers).
What about that makes it sound like you don't live in the United States?
Your location is also written right below your name. So I'm not sure I see how it could it be any less confusing...