The “relief” bill was passed using a procedure known as reconciliation, which allows bills related to spending (but not other things such as the “$15 minimum wage” nonsense, which was declared ineligible by the parliamentarian) to be passed in the senate with a simple majority. This isn’t Schumer having more power. It’s Schumer tailoring the bill to fit this particular rule. They had to take minimum wage out of it, otherwise they would have faced a filibuster. This is why the left is angry with the bill they did pass.