Final answer:
The statement that the President must bring troops home within 60-90 days unless Congress extends the time period is related to the War Powers Act, which requires the President to notify Congress within 48 hours of deploying troops and limits unauthorized military action to 60 days, with a 30-day withdrawal extension.
Step-by-step explanation:
The question posed pertains to the War Powers Act, which is a law designed to check the president's power to commit U.S. troops to conflict without congressional authorization. The statement suggests that the president must bring troops home within 60-90 days unless Congress extends the time period. The true legal framework, as established by the War Powers Act, states that the president must inform Congress within 48 hours if U.S. forces are sent into hostile environments without a declaration of war. Moreover, these forces may only remain without explicit congressional approval for up to 60 days, with a possible extension of an additional 30 days (for a total of 90 days) to safely withdraw forces, unless Congress declares war or provides the necessary authorization to extend the military engagement.