According to this report, travelers to Michigan and Kentucky should first get vaccinated for Hepatitis A:
What are we now - a third world country?
This probably would not have happened if we had a meaningful immigration policy which screened people before allowing entry into our country or required THEM to get vaccinated.
And since the disease is spreading in the homeless sector, it also would help if we gave every US citizen at least a rudimentary form of health care at no cost to them. Doing so would pay far greater dividends than would the practice of bombing people and driving them into refugee status.