Anything to do?-Customs

USPS Tracking info
I have 3 packages for 2 Group Buys trapped in Chicago customs. They have been there 4 days, should I worry? Is there anything I can do?

Glad I checked my link /ubbthreads/images/graemlins/smile.gif the # is
EM71 3309 608K R

1 day Seoul to Chicago. 4 days and counting Chicago to MN /ubbthreads/images/graemlins/jpshakehead.gif

Well the boxes are in customs and today I get a letter from "U.S. Customs and Border Protection" with a "Department of Homeland Security" seal on it. The packages are being held because it has been determined that a Formal Entry (somewhere there is a deffinition), is required. I think I can take care of this in Duluth Port Of Entry, but I'm not sure. I'll update again tonight.
The value of the packages is less than what they stated so I may be able to get it released with out too much paperwork. You know the Goverment doesn't like too much paperwork /ubbthreads/images/graemlins/icon15.gif