Of course science can happen elsewhere, but science is struggling to get enough funding already. With a major rich country pulling funds, cancer research worldwide is affected.
This particular study was funded in part by an NIH grant: https://reporter.nih.gov/search/3JOZ-0aY0EOBJOb7uLdbzA/proje... and https://reporter.nih.gov/search/3_aBusrtpki2R0Moj7ntjg/proje...
Part of the research was also funded by this grant: https://reporter.nih.gov/search/lW12o2Q2CEe6M9PKMITWWQ/proje... and seemingly this grant: https://reporter.nih.gov/search/gjjBtikE4Uuyy875NUyiog/proje...
I count $3,043,276 in funding from the first NIH grant plus $10,515,749 from the second. I don't know how where the funds for the "Robertson Therapeutic Development Fund Early Clinical Development Award" and "The V Foundation for Cancer Research" came from and how much of the broader grants were spent on this research, but this particular research seems to have been funded mostly by the USA.