The United States has seen no evidence of looming Chinese military activity against Taiwan, White House national security spokesperson John Kirby said Friday when asked about a possible visit to the island by U.S. House Speaker Nancy Pelosi.

“[We’ve] seen no physical, tangible indications of anything untoward with respect to Taiwan,” Kirby told reporters. Pelosi has not confirmed that she’ll visit Taiwan.

Tensions around Taiwan were a dominant topic Thursday in a phone call between President Joe Biden and Chinese President Xi Jinping.

China has been stepping up military activity around Taiwan, seeking to pressure the democratically elected government there to accept Chinese sovereignty. Taiwan’s government says only the island’s 23 million people can decide their future, and while it wants peace, it will defend itself if attacked.

U.S. House Speaker Nancy Pelosi, D-Calif., holds her weekly press conference on Capitol Hill in Washington, July 29, 2022.

U.S. House Speaker Nancy Pelosi, D-Calif., holds her weekly press conference on Capitol Hill in Washington, July 29, 2022.

Pelosi, who as House speaker is No. 3 in the line of the U.S. power hierarchy after Biden and Vice President Kamala Harris, signaled on Friday that she was going to Asia. She did not say she was going to Taiwan.

“I’m very excited, should we go, to the countries that you’ll be hearing about along the way,” she said, after citing the importance of the U.S.-Asia-Pacific relationship.

The White House has refused to comment on reports that she will go to Taiwan.

“Where she’s going and what’s she’s going to be doing, that’s for the speaker to talk to,” Kirby told reporters.

Kirby said U.S. officials have seen bellicose rhetoric from China about a potential trip by Pelosi and said, “There’s no need for that.”

A U.S. military official, speaking on the condition of anonymity, said that the military had so far not sent additional ships or planes near Taiwan in recent days.

The United States already has a large military presence in the Asia-Pacific, including around the South China Sea, through which a U.S. aircraft carrier is currently sailing.