Legal System

The federal government could elect to leave migrants alone, while also not offering citizenship. In other words, it could do nothing at all.

E-Verify could be used to punish anyone who displeases the government, from immigrants to homeschoolers to gun owners.

The Wright brothers spent most of their post-1903 careers suing other inventors who were doing the much-needed work of improving airplane technology.

Prior to 1973, there were almost no federal laws on abortion, one way or the other. Even though abortion rates were quite high in the 19th century.