Following a period of suspension, the statutory debt limit was reinstated on December 9, 2017, at a level that precisely accommodated the federal borrowing undertaken to that date. On December 11 and 12, 2017, Secretary Mnuchin announced that the Treasury would implement "extraordinary measures" that delay when the debt limit will bind. Additionally, the Bureau of the Fiscal Service suspended sales of certain Treasury securities to extend the Treasury's ability to meet statutory spending requirements without defaulting on its debt obligations. These measures were used until passage of the Bipartisan Budget Act of 2018 (BBA 2018; P.L. 115-123) on February 9, 2018, which suspended the statutory debt limit until March 1, 2019. This Insight briefly examines the debt limit and the use of extraordinary measures.