The United States, believe it or not, has a special relationship with the Philippines. Once a US Territory, the Philippines were granted their independence after the Second World War was settled, but there were recurring problems and friction about basing US troops and naval personnel, and currently there is virtually no presence there. The Harris/Biden regime would ditch the Philippines in a minute, rather than to face off against China in any significant way.
China has already moved to take over operations at the Clark Air Base and the Subic Bay shipyards, and the Philippines have been badly compromised. They would not stand alone very long against the PLA navy.
“China has already moved to take over operations at the Clark Air Base and the Subic Bay shipyards,”
Commercial endeavors...to the extent they can separated from the Chinese state.
But there has been no Chinese military activity at either.
No ships, no planes, no munitions.