bush - tax fraud?

From Americablog :

They've got a house in rural Texas and a nice home-office setup on Pennsylvania Avenue. But for tax purposes, President Bush and his wife, Laura, claim a Chicago post office box as their "home address."

On the 1040 they signed, which the White House released last week, the listed home address is "Northern Trust Co., P.O. Box 803968, Chicago, IL 60680."

White House spokeswoman Erin Healy said Tuesday that's because Northern Trust handles the blind trust the couple uses for their holdings since Bush took office.

---
Not sure what this would accomplish, but weird, none the less....