McConnell and Senate Republicans repeatedly blocked efforts to raise the debt limit.
McConnell reversed his course Wednesday and granted a two-month extension to the country's debt limit.
McConnell stated that Republicans would not support raising the debt limit in December.
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Senate Minority Leader Mitch McConnell (R-Ky.), reversed his position on debt-limit extensions and sent President Joe Biden a letter on Friday complaining about Senate Majority Leader Chuck Schumer’s handling of the country's debt crisis.
"Whether it was through weakness or an intention to bully his members, Senator Schumer led the nation to the brink of disaster. It reached the point that Senators from both sides were asking for leadership to protect their citizens and fill the void. McConnell wrote that he had stepped up.
McConnell has been mobilizing Senate Republicans to block any measure to raise the country's default limit. He demanded that Senate Democrats increase it by themselves through a long budget reconciliation process. He reversed course on Wednesday and offered Democrats a two-month extension of the debt ceiling to prevent default.
McConnell, however, promised in a letter to Biden that Republicans wouldn't provide any assistance to December in order to raise the debt limit.
"Your Capitol Hill lieutenants now have the time and the tools they needed to solve the debt ceiling via standalone reconciliation. McConnell stated in the letter that they cannot create another crisis and request my assistance.