I think the number is 12027079100. You can get if from Washington DC information if that doesn't work. The copyright laws are very strong but copyright owners cannot catch all infringers. I believe that taping off a TV screen is probably an infringment. The taper will not get in trouble unlese they try to sell and get caught.
Many photocopies are infringements.
It is too hard to police. There are efforts to find ways of dealing with this type of infringement. There are even stong criminal statutes involved with copyright infringment. Casual infringement is har to trace. ASCP polices music and licences its use.