The Government Shutdown Efficiency Act aims to give the President the authority to sell federal real estate during times when the government is not funded, known as a lapse in appropriations. The main objective is to ensure that essential federal employees can still be paid and that government operations can continue even when funding is temporarily unavailable. Key provisions of the Act allow the President to sell any federal property and use the proceeds to pay salaries and expenses for federal employees who are exempt from furlough during a funding lapse.