WASHINGTON — The Obama administration says it’s doing what it can to address the Zika outbreak in Florida after giving $35 million in Zika and emergency preparedness funding while blaming Congress for failing to further support Zika prevention efforts.

But Florida Republican Sen. Marco Rubio charged the White House with holding back and said that approximately $300 million could be made available to help southern Florida cope with the first locally transmitted Zika outbreak in the continental United States.

Kevin Griffis, a spokesman for the Department of Health and Human Services, said there was a process for allocating taxpayer money on the most important priorities and that much of the money was, in fact, unavailable for domestic spending. More than $200 million of the $374 million available has already been committed, he said.