The circumstances around the deadly UH-60 Black Hawk medical evacuation helicopter crash are under investigation, officials said.
Officials did not say which agencies or infrastructure had been breached or what information taken in a March attack.
"People working in the White House should receive the vaccine somewhat later in the program, unless specifically necessary,” the president said in a tweet.
Officials are trying to determine the cause of the illness. So far, patients have tested negative for COVID-19.
An Israeli official said that five Americans were among the dead. The other victims were French and Czech.
Former GOP Sen. Rick Santorum, who has a financial stake in the obscure company, lobbied senior U.S. government officials for funding.
The president met with officials but no locals whose homes had been destroyed. He said Louisiana has "been a great state for me.”
An estimated 1 ton of oil has already escaped into the Indian Ocean after a Japanese ship ran aground off the island's southeast coast.
Ramon Thomas Villagomez, 31, was killed during a shootout with police officers, officials said.
The sighting comes after a pigeon in Las Vegas with a miniature cowboy hat glued to its head died earlier this week, animal officials said.