https://khn.org/news/article/biden-ftc-block-hospital-merger...
https://www.airandspaceforces.com/ftc-blocks-merger-of-lockh...
https://www.nasdaq.com/articles/nvidia-and-arm-merger-deal-b...
https://www.housingwire.com/articles/50114-ftc-moves-to-bloc...
https://www.legalbettingonline.com/news/daily-fantasy-sports...
Mostly the FTC’s work happens quietly and unnoticed, but there are annual reports here:
https://www.ftc.gov/policy/reports/annual-competition-report...
And you can search merger actions here: