Maybe you see the inherent problem with the setup where President Trump is in charge of checking up on what President Trump is spending money on.
Congress as the Legislative Branch has no authority to Execute.
It does not. In fact, limiting this benefit of the doubt has been a major goal of the conservative legal movement in recent years. If what you say was true then Biden would have had no trouble forgiving student loan debt and requiring generation shifting.
In the federal government of the United States, the power of the purse is vested in the Congress as laid down in the Constitution of the United States, Article I, Section 9, Clause 7 (the Appropriations Clause) and Article I, Section 8, Clause 1 (the Taxing and Spending Clause).
The power of the purse plays a critical role in the relationship of the United States Congress and the President of the United States, and has been the main historic tool by which Congress has limited executive power.
DOGE and the Treasury Department are both part of the Executive Branch and derive powers from its head, aka the President.
This is essentially President Trump telling President Trump to hand President Trump the keys to the payment system so that President Trump can check WTF President Trump is spending money on.