U.S. District Judge Michael Simon granted a temporary restraining order that prevents the rule from going into effect Sunday.
In his ruling, Simon said he would hold a hearing on November 22 to determine whether he will issue a preliminary injunction in the case. They also said it would bar as many as 375,000 qualified immigrants each year.
Seven US citizens and a nonprofit organization filed the federal lawsuit Wednesday charging that the health care requirement would block almost two-thirds of all prospective legal immigrants.
The number of immigrants entering the United States on a family visa will drop significantly or be completely eliminated.
Esther Sung, a senior litigator for the Justice Action Center who argued on behalf of the plaintiffs, said the administration's rule would also separate immigrant families.
US President Donald Trump has suffered a new legal setback after a federal judge temporarily blocked a measure that would have required immigrants to prove they had health insurance or could afford medical care. The Saturday ruling was the latest in a string of court decisions to derail President Donald Trump's initiatives aimed at limiting the admission of certain legal immigrants into the United States.
The proclamation signed by President Donald Trump in early October applies to people seeking immigrant visas from overseas - not those in the US already.
"However, it would apply to the spouses and parents of USA citizens and the immediate family members of lawful permanent residents", NPR reported last month.
Judge Michael Simon of the U.S. District Court for the District of OR issued a temporary restraining order to prevent President Donald Trump's October 4 proclamation-which requires that immigrants demonstrate that they have OR can obtain insurance within 30 days of arriving in the United States-from going into effect over the weekend.
Notably, data show that lawful immigrants are about three times more likely than United States citizens to lack health insurance. The US healthcare system is complex, and has not generally catered to people yet to arrive there.
Under the rule, insurance can be short-term coverage or catastrophic, and it can be purchased individually or provided by an employer.
Probable immigrants have been trying to determine how to get the insurance they need. The federal government pays for those subsidies. Per an diagnosis by Leighton Ku, director of the Centre for Health Policy Examine at George Washington College, fresh immigrants with out insurance accounted for decrease than one-tenth of 1% of USA clinical expenditures in 2017.