Is it legal to hire unpaid interns

<p>I swear I saw an article recently about PAID internships, meaning the student/parent pays for the (unpaid) job opportunity.
My usual reading is the NYTimes, WSJ etc. Does somebody remember seeing this?
Here it is…</p>

<p><a href=“http://online.wsj.com/article/SB123310699999022549.html[/url]”>http://online.wsj.com/article/SB123310699999022549.html&lt;/a&gt;&lt;/p&gt;