Why do roadblocks to control the flow of illegal aliens need less protection than other locations under the Fourth Amendment?

Question

Quizplus · Accepted Answer

Roadblocks to control the flow of illegal aliens are considered to need less protection under the Fourth Amendment because there is a strong governmental interest involved in regulating immigration and because the roadblocks are typically unobtrusive in nature. Additionally, due to exigent circumstances, such as the need to quickly identify and apprehend potentially dangerous individuals, law enforcement may be permitted to conduct searches and seizures that would otherwise be unconstitutional.

Why Do Roadblocks to Control the Flow of Illegal Aliens