Answer:
The situation that would most likely be a violation of a citizen's Fourth Amendment rights is option B: The police search a suspect's house without a search warrant.
Step-by-step explanation:
The Fourth Amendment of the United States Constitution protects individuals from unreasonable searches and seizures by the government. It states that people have the right to be secure in their persons, houses, papers, and effects, and that searches and seizures should only be conducted with a warrant issued upon probable cause.
In option B, if the police search a suspect's house without obtaining a search warrant or without any justifiable exception to the warrant requirement, it would likely be considered an unreasonable search and a violation of the suspect's Fourth Amendment rights.
Options A, C, and D are not specifically related to Fourth Amendment rights:
A. Congress passing a law making it illegal to own handguns would be a matter of Second Amendment rights (the right to bear arms), not Fourth Amendment rights.
C. A court forcing a defendant to stand trial without an attorney would involve Sixth Amendment rights (the right to counsel), not Fourth Amendment rights.
D. A president shutting down a newspaper for criticizing his policies would be a violation of First Amendment rights (freedom of speech and press), not Fourth Amendment rights.