From Wikipedia....

" In 1996, the U.S. Personal Responsibility and Work Opportunity Act removed Medicaid benefits for resident foreigners from the states, even after the five-year waiting period that most other resident aliens have.[7]"

"The Personal Responsibility and Work Opportunity Reconciliation Act of 1996 (PRWORA) is a United States federal law considered to be a major welfare reform. The bill was a cornerstone of the Republican Contract with America and was authored by Rep. E. Clay Shaw, Jr. (R-FL-22). President Bill Clinton signed PRWORA into law on August 22, 1996, fulfilling his 1992 campaign promise to "end welfare as we have come to know it".[1]"

Hawaii doesn't "feel" like they want to break the bad news and, instead, keeps stepping up to pick up the tab - with OUR tax money.  THEIR choice which makes it NOT a fed issue.