Yes, you can definitely get health insurance for your parents visiting USA. Here is some information on how to do it:
• First, check with your parents' home country if they have health insurance that provides coverage in the US. If so, contact the insurer to make sure whether they cover your parents.
• If not, you can look into short-term health insurance plans for international visitors. Many insurance providers offer short-term health insurance for visitors that last for around 6 months.
• You can also look into travel health insurance plans. These policies give health coverage for the duration of one trip or a certain number of days specified in the policy.
• Furthermore, you can also contact your parents' home country embassy in the US to find out if there are any low-cost visitors health insurance plans available.
For more information, you can check this article on health insurance for visitors to USA:
https://www.ehealthinsurance.com/health-insurance-providers/international-visitors-health-insurance