"We are determined — and it's fully my intent and the president's (Joe Biden) intent — to spend every cent that we have available from the $61 billion that was authorized by Congress in the supplemental appropriation," U.S. Secretary of State Antony Blinken said at the end of 2024.The Kyiv Independent explains what the Presidential Drawdown Authority is, how it was used, and why the Biden administration failed to use up the funds provided to him by Congress.President's military shipmentsOn Jan. 9, the outgoing president signed into force a military aid package for Ukraine worth $500 million. The aid package was said to be the last one before a new administration takes office on Jan. 20.The last tranche included missiles for air defense, air-to-ground munitions, armored bridging systems, as well as equipment to support Ukraine's use of F-16 fighter jets.The final aid package from the Biden administration was expected to be much larger, with nearly $4.3 billion in available funding open to the president's signing at the start of 2025.U.S.