Rosa Moreno lost both her hands in an industrial accident, working for a contractor for a multinational brand. She was lucky to get help to sue for compensation, but lost the suit on a technicality.

Ms Moreno is not entirely innocent. Lacking a sure income, she did wrong to have six children. Indeed, it is wrong for anyone to have six children. But that is a separate issue and in no way justifies the way she has been treated after her injury, nor the dangerous conditions maintained at her workplace.

This is what "free trade" does: it enables the multinational to make countries compete to attract production by allowing the worst possible working conditions and workers' rights.

If Mexico had had a real compensation system for accidents at work, the company would have maintained Machine 19 carefully and followed proper safety procedures, and this accident would probably not have happened.

That is the basic reason why we must get rid of those treaties. We must require companies to situate their production somewhere and leave it there, so that governments will respond to public pressure to start protecting workers' rights.