You're always free to call an employer to check on the status of your application or to see if the position has been filled.

CNN: Why don't employers call me back?

If you can track your UPS package with your iPhone, then why not be able to check the status of your citizenship application on a website, rather than having to write a letter and wait for a letter back?

WHITEHOUSE: Forum on Modernizing Government: Opening Session

Or the team at Citizen and Immigration Services, the old INS, which in just 90 days, replaced its opaque application process with a transparent tracking system that allows people to check their status online, better and cheaper.

WHITEHOUSE: "Doing What Works" Transcript