What new reconciliation powers has Schumer obtained?
Senate Minority Leader Mitch McConnell just sent a letter to President Biden explaining why Senate Republicans don't intend to vote to raise the debt ceiling, which needs to be raised by October 18 to avoid defaulting on the national debt. He argues that Senate Democrats should be able to raise it all on their own through the Budget Reconciliation process, which allows budget-related bills to be passed in the Senate with a simple majority rather than a 60-vote supermajority. In particular, he says this:
There is one difference between [the 2000's] and now: Leader Schumer requested and won new powers to repeatedly reuse the fast-track, party-line reconciliation process. As a result, Senate Democrats do not need our consent in any shape or form to do their job. Democrats do not need our consent to set a vote at 51 instead of 60.
My question is, what new powers did Senate Majority Leader Chuck Schumer request and obtain? Did Senate Democrats change the frequency with which the Budget Reconciliation process can be used?