What are the requirements of health insurance on EB-5 visa applicants?

This process is currently on hold due to litigation, but showing financial ability to pay for insurance within a reasonable time was an option.

Yes. You are correct. According to the Presidential Proclamation dated Oct. 3, 2019, Section 1, upon 30 days of entry to the U.S. you would need to have an employer-sponsored plan, including a retiree plan, association health plan, and coverage provided by the Consolidated Omnibus Budget Reconciliation Act of 1985 or an unsubsidized health plan offered in the individual market within a state or a short-term limited duration health policy effective for a minimum of 364 days - or until the beginning of planned, extended travel outside the United States or a catastrophic plan or a family member''s plan or a medical plan under chapter 55 of title 10, United States Code, including coverage under the TRICARE program or a visitor health insurance plan that provides adequate coverage for medical care for a minimum of 364 days - or until the beginning of planned, extended travel outside the United States or a medical plan under the Medicare program; or any other health plan that provides adequate coverage for medical care as determined by the Secretary of Health and Human Services or his designee. For immigrants over the age of 18, Medicaid will no longer be viewed as an approved plan.

No. You may have to show that you have the means to buy a health insurance policy for you and your family upon arrival.

There is no implementing guideline regarding this "proclamation" as yet, and the proclamation is facing legal challenges at the moment. Broadly stated, you need to show you can "afford" health insurance or be able to pay for "reasonably foreseeable medical costs." Very vague indeed.

On Oct. 4, 2019, President Trump issued a proclamation that, beginning Nov. 3, 2019, would restrict immigration to the United States by people who are uninsured and cannot pay the costs of their health care. The proclamation would deny entry into the U.S. if they are unable to show that they will be covered by certain insurance products within 30 days after entering the country or have the financial resources to pay out-of-pocket for "reasonably foreseeable medical expenses." "Approved" health insurance under the proclamation includes plans authorized by the Trump administration. So it appears that the purchase of a travel policy will get one past the first stage but you are likely better to try and purchase more complete health insurance.

Not sure yet what the new rules will be on health insurance.