As the balloon appears to be heading toward North Carolina, the current thinking is to wait until it is over the Atlantic Ocean to then try to shoot it down and retrieve it, according to a senior U.S. official familiar with the situation.

There is too great a risk to try to shoot it down over the continental U.S., the official said. Since the U.S. wants to keep the balloon to study it, and there are otherwise risks of an international incident, U.S. officials are working on plans to shoot it down so that it also lands in U.S. territorial waters, the official said.

A substantial localized airspace shutdown will likely be required in order to protect civilians while the U.S. tries to down the balloon, which is likely being navigated via Chinese spy satellites, the official said.

-ABC News' Josh Margolin

Secretary of State Antony Blinken, taking questions about the Chinese surveillance balloon, said the first step should be getting it out of U.S. skies.

"Job One is getting it out of our airspace," he said.

Blinken said they've made it clear to China the action is "clearly unacceptable" and addressed further his decision to delay traveling to Beijing until conditions allow for a visit.

"Any country that has its airspace violated in this way, I think would respond similarly," he said. "And I can only imagine what the reaction would be in China if they were on the other end."

Secretary of State Antony Blinken called the surveillance balloon an "irresponsible act" by the People's Republic of China.

Blinken said he made clear to Wang Yi, the director of China's Central Commission for Foreign Affairs, that the balloon's presence is "a clear violation of U.S. sovereignty and international law ... and that the PRC's decision to take this action on the eve of my planned visit is detrimental to the substantive discussions that we were prepared to have."

Blinken postponed his first official trip to China amid the controversy.

The secretary of state said his team had been engaging "for some time" with their counterparts in Beijing to prepare but have now "concluded that conditions were not conducive for a constructive visit at this time."

The remarks were made Friday during a joint press availability with South Korean Foreign Minister Park Jin at the State Department.

President Joe Biden was first briefed about the Chinese surveillance balloon on Tuesday, according to White House press secretary Karine Jean-Pierre, two days before the news was publicly confirmed by U.S. officials.

"He asked the military to present options," she told reporters in a gaggle on Air Force One. "It was the strong recommendation by Secretary Austin, Chairman Milley, the commander of Northern Command, not to take kinetic action because of the risk to safety and security of the people on the ground. President Biden took that recommendation from the military seriously."

"The president will always put the safety of the security of the American people first," she said.

Jean-Pierre said Biden continues to receive regular briefings from national security team, and that he "agreed" with Secretary of State Blinken's decision to delay his trip to China.

"We are tracking closely and keeping all options on the table," the press secretary said.

President Biden declined to take any questions about what U.S. officials call a Chinese surveillance balloon as he discussed the latest jobs report on Friday morning.

"If you want to ask me a question about the economy, but I'm not going to answer any questions about anything else because you never will cover this," Biden said.

Reporters shouted several questions about the balloon as Biden exited the South Court Auditorium but he didn't stop to answer them.