Is overseas health insurance policy necessary to enter in US?

There are no known laws that mandate health insurance coverage for all US entrants. However, some seniors have been questioned by Immigration Officials (at US port of entries) about their healthcare arrangements before stamping their I-140 forms. Obviously, there is concern about foreigners becoming a burden for the US health-care system that is already stressed and strained.
There are several plans specially designed for visitors or foreign tourists entering the US. These plans are affordable and can address expenses from sudden sicknesses or injuries. The cost of these plans while not cheap can protect foreign entrants to US from big health-care bills. There are several plans one can compare and purchase at http:/www.ivisitorinsurance.com