In 2016, Mitch McConnell refused to act on Merrick Garland's Supreme Court nomination and held it for a year.
Notes on verification
Well-documented political event corroborated by CNN, NPR, and CBS News. Minor imprecision in 'a year' framing (vacancy lasted ~14 months, nomination itself lapsed after ~10 months), but broadly accurate and consistent with common characterizations.
Sources
- McConnell Undid 213 Years of Senate History in 33 Minutes (apnews.com)
- https://www.cnn.com/2020/09/18/politics/merrick-garland-senate-republicans-timeline (cnn.com)
- https://www.npr.org/2018/06/29/624467256/what-happened-with-merrick-garland-in-2016-and-why-it-matters-now (npr.org)
- https://www.cbsnews.com/news/mitch-mcconnell-supreme-court-vacancy-election-year-senate/ (cbsnews.com)