Congress appropriates funds for U.S. assistance to Ukraine. As of April 2024, it had allocated over $174 billion for this purpose. The President oversees the execution of these funds. However, in March 2025, President Trump paused military aid to Ukraine to pressure President Zelenskyy into negotiations with Russia.
But again, despite Congress appropriating the funds for assistance to Ukraine, it's still Biden's fault.
*wink*
So, in the three weaks (at the time of meme posting) since Trump has been in office, Biden did something that caused the stock market to crash. Three weeks ago was February.