It's certainly possible that a significant portion of Americans would comply with such a law, at least initially. There are a few reasons for this. First, many people have a strong sense of patriotism and respect for authority. They may believe that it is their duty to obey the law, even if they don't agree with it. Second, there is a powerful social pressure to conform. People may be afraid of being ostracized or punished if they don't comply with the law. Third, people may simply be unaware of the consequences of the law and may not realize how harmful it could be. However, it's also likely that there would be a significant amount of resistance to such a law. Many people would view it as a violation of their personal freedoms and would refuse to comply. There would also likely be protests and legal challenges to the law. Ultimately, the extent to which Americans would comply with such a law is difficult to predict. It would depend on a number of factors, including the specific wording of the law, the way it was enforced, and the level of public support for it.