The main purpose of this legislation is to give the Secretary of Homeland Security the ability to move funds between different accounts within the Department of Homeland Security during times when the government is not funded, known as a lapse in appropriations. This is intended to ensure that essential operations can continue even when there is a budget impasse. Key provisions of the legislation include the authority for the Secretary to transfer unobligated funds from specific accounts under the "One Big Beautiful Bill Act" to other accounts within the Department.