The proposed Medicaid cuts are over 10 years, so about $90B per year, approximately 16% of the Medicaid budget (Medicaid/CHIPS was about $580B last year). The ACA Medicaid expansion is about 20% of the annual Medicaid budget. You can see where this is headed.

https://www.kff.org/medicaid/issue-brief/eliminating-the-medicaid-expansion-federal-match-rate-state-by-state-estimates/#:~:text=Forty%2Done%20states%20(including%20DC,multiple%20policies%20were%20considered%20together.