Two issues here. 1) Lack of money is not necessarily the problem. Trumps executive order put into place a rule that no new people could be employed by the federal government, with exceptions only for national security purposes. Day care workers fit the security purposes exceptions laid out by DOD, but the waiver process is slow and there are over 2000 current vacancies. 2) Secret service is in the Department of Treasury so funding for the DOT would have to be transferred over to DOD, which is possible, but highly cumbersome administratively and unlikely because once Departments have their funding from congress, then don't want to give it up. Congress could reallocate the money, but it would have to come in to the form of a budget resolution or continuing resolution. We are not due for another continuing resolution until march (and that will likely be a fight in the senate) and that would be doling out funds for the reaming of the fiscal year, so the reallocated funding would not be available to the the DOD until late March.