[abtinf]

Unpaid internships are illegal[1]. Unless you are the government, in which case you exempt yourself from the law.

[1] http://www.dol.gov/whd/regs/compliance/whdfs71.htm

[dragonwriter]

Your link says: There are some circumstances under which individuals who participate in “for-profit” private sector internships or training programs may do so without compensation.

Which is directly contrary to the point you cite it to support.

[judk]

Is there actually an exemption for government interns? You didn't cite that part of your post.