President Obama met with his top public health advisers at the White House Friday and warned Americans that unless lawmakers approved funding soon to combat the Zika virus, some families in the United States would face "tragedies that can last a lifetime."

"We feel fairly confident that we can develop a vaccine for Zika and that would help a whole lot of people and allow us to get out in front of this problem before it's in the continental United States, but that requires resources," Obama said. "The problem is right now that money is stuck in Congress. And we have not seen the House and the Senate come together in a sensible way to put forward the dollars that we have requested that have been budgeted to get the job done."

The House has passed a funding bill administration officials have described as inadequate for the task, and earlier this week, Senate Democrats blocked a $1.1 billion funding package to fight the mosquito-borne virus because of “poison pill” measures.

Obama, who met with Health and Human Services Secretary Sylvia Mathews Burwell, National Institute of Allergy and Infectious Diseases Director Anthony Fauci, and Centers for Disease Control and Prevention Director Tom Frieden, took aim at those congressional riders when speaking to reporters Friday.

People are "trying to attach legislation on a bunch of unrelated topics to this funding," he said. "It's been politics as usual rather than responding smartly to a very serious public health request."

"But when there are emergencies, when there are public health emergencies, when we know that we have the chance to prevent serious tragedies in the lives of families and protect the health and safety of our populations, and particularly our children, then those politics need to be set aside," he added.

[Without federal aid, localities confront Zika on their own]

Republicans, for their part, said that it is the White House's refusal to compromise that has delayed the deployment of new funds.

Because Congress has not yet approved the administration's Zika request, the administration has shifted money previously earmarked for Ebola, and HHS has redirected about $44 million in public health emergency preparedness grants that state and local health departments are slated to start getting Friday.

In some of the highest-risk places in the continental United States, for instance in the South, the constraints on federal funding have prompted some state and local officials to focus on promoting educational awareness, by distributing coloring books to grade school kids and taking other measures.

Puerto Rico remains the hardest-hit place in the United States when it comes to Zika. The Aedes aegypti mosquito population there — which transmits the virus — is resistant to the most common types of insecticides that the island has been using. The government will start spreading a new kind of insecticide there on Friday, and there have been protests about this in front of the CDC’s office in Puerto Rico by some who question its environmental impact.

"And at a time when Puerto Rico is already going through a tough time and its public health infrastructure is being strained because of budget constraints and debt problems, it's especially important that we're responsive to the millions of American citizens who live there," the president said. "And keep in mind that there's a lot of travel back and forth between Puerto Rico and the continental United States. So this is not something that, ultimately, may end up just being isolated there."