In 1993 the Space Advertising Prohibition Act sought to prevent the launching of billboards made of square mile-size mylar into low Earth orbit. This legislation holds the phenomenon at bay for the present, but U.S. law could be eluded by launching from other countries. This issue calls into question the ability of national governments to regulate international businesses.
For years the media has represented invasions of the Earth by space aliens. But we may have more to fear from our own invasive practices. Whereas guns have been used to defend against space aliens, it may be attitudes and laws that hold back the space invaders of Act 1732