Final answer:
The three constitutional issues in the debate about substance testing are the Fourth Amendment protection, right to privacy, and the equal protection clause of the Fourteenth Amendment.
Step-by-step explanation:
The three constitutional issues in the debate about substance testing are:
- The Fourth Amendment protection against unreasonable searches and seizures.
- The question of whether drug testing violates an individual's right to privacy.
- The interpretation of the Fourteenth Amendment's equal protection clause in relation to drug testing policies.
These issues arise in various contexts, such as drug testing of students, employees, and individuals receiving government benefits. Courts have evaluated these issues by considering factors like the government's interest in testing, the balancing of privacy interests, and the potential for discriminatory impact.