Laws and regulation under which pregnancy workout DVD business comes under

Dear Sirs,

I am writing a report on  'Market Potential of Pregnancy Exercise DVD in USA'.

I have been looking for the below data and unable to get any information;

'Laws and regulation, under which pregnancy workout DVD business comes under'.

Could you please forward me some information so i can complete my report.

Your early reply will be much appreciated as i need the data as soon as possible.

I look forward to hear from you.

Many thanks in advance.

Regards,

Geo Kan