Surveys.com is a very good US survey panel. I have been a member of surveys.com for about 3 years. They send out surveys periodically about once a week and each survey will reward some points. Points are redeemable for a hundreds of rewards. US citizen must be at least 18 years old to join this survey panel. The minimum cash out point is 398 points for mp3 music download, and “All Points” expire eighteen (18) months after they have been awarded and credited to your account. So make sure to cash out your points before they expire. To my experience, keep the personal profile updated can help getting more surveys from them.
As a truthful US survey website, I recommend Surveys.com to you.