Final answer:
The Alien and Sedition Acts passed during John Adams' presidency made it more difficult to become a citizen and illegal to criticize the government.
Step-by-step explanation:
The Acts passed during John Adams' presidency that made it more difficult to become a citizen and illegal to slander (or criticize) the government were the Alien and Sedition Acts. These Acts consisted of several laws that targeted immigrants and restricted speech critical of the federal government. The Alien Acts extended the residency requirement for citizenship and allowed for the deportation of aliens, while the Sedition Act imposed penalties for speaking or writing against the government.