I think you are probably mostly familiar with high profile cases in the tech space. Outside that the DoJ has a pretty strong record of success in antitrust cases.

Recent examples include:

* A case involving wage suppression by a secret agreement of poultry procesors in Georgia (May 2023)

* A divestment agreement for ASSA ABLOY AB to take over Spectrum Brand Holding Inc.’s Hardware and Home Improvement division

* An antitrust lawsuit against Activision for esport wage surpression.

See https://www.justice.gov/news/press-releases?f%5B0%5D=facet_t... if you want more

I suspect antitrust action against a Chinese-owned entity that had shutdown travel in the US would be fairly broadly supported.