Tips on finding job opportunities in US?

Well, I'm a software engineer with a bachelor degree in Computer Science. My work experience is mainly in web (Rails, PHP) and mobile (BlackBerry, Phonegap) development. I have experience with other stuff but I don't want to bore you with that.

Currently I'm in Venezuela, employed and I have to say that my current job is really great. But due to personal reasons, I'm looking for a job in US.

I have read a lot on how to build a good resume, although sometimes you found some contradictory opinions out there. I periodically check sites like Cybercoders, Monsters. I updated my LinkedIn. In short, I have tried to improve my chances of getting noticed but I know that, in the end, a big downside on my profile is that I need visa sponsorship.

Is there any tips? Maybe, some of you have already some experience with this and can give me some advice. Thanks :)