Yes we should Increase taxes on everything they export to US along with Taxes on every Transaction between American banks, and banks in the Philippines. If we did this, along with cutting aid, we can either help them become autonomous under China, and save money instead of sending it to a nation hostile to the US. If China proves that they can not support the Philippines, then it will encourage the Philippines to work harder to achieve their own autonomy, or it will prove that they were wrong to abandon the US.
The Philippines has a long career of a corrupted government. Our government has been protecting the Philippines but they are not helping the people,stopping the corruption. Taxing the Philippines for what, As far as we know the American Government dont own the Philippines. Should we stop giving troops to the Syrian government because they refuse our help?.