The Tydings-McDuffie Act (Phillippine Independence) was approved by the US Congress
I would argue the fact that we let the phillipines go otl had more to do with the encroaching decolonization of most of the colonized areas of the world. Had World War II not happened we would not have let them go like that. And for some perspective we quite literally committed genocide to keep them part of the US thirty years earlier, that shouldn't be forgotten.
More like 45 years earlier - 1902 maybe, for the end of the "Philippine insurrection" in any real sense.
The Tydings-McDuffie Act (Phillippine Independence) was approved by the US Congress in 1934; "encroaching decolonization" had nothing to with it, since the only "colonial" territory any of the powers had given up at this point was Weiheiwei, in 1930.
The biggest reason why, frankly, was the expense and strategic risk US possession of the PI entailed; everyone knew (and had known) the islands could not be defended against Japan since the 'teens.
And yes, given the result, one can only wish the US had made the same decision in 1898 that was made in 1934, for both Filipinos and Americans.
That's actually an interesting possibility; have an equivalent to the Cuba-US relationship come into being in 1898, rather than what actually did occur, which leads to a US withdrawal with (minor) basing rights. How do a Philippine Republic and the US interact for the next century, and what impact does that have on great power politics in the Western Pacific, all other things being equal?
Best,