A registered nurse who is coming to the United States to perform labor in covered health care occupations (other than as a physician) and wishes to apply for Immigrant Visa(Permanent Resident Status) is required to have the following: 

The U.S. Securities and Exchange Commission’s Office of Investor Education and Advocacy and U.S. Citizenship and Immigration Services are jointly issuing this Investor Alert to warn individual investors about fraudulent investment scams that exploit the Immigrant Investor Program, also known as “EB-5.”

All USCIS offices worldwide are open. Activities continue despite Government Shutdown. 

On the other hand The State Department had this announcement to make

As reported by The Indian Express :

It is a political situation in which government stops providing for all but 'essential' services. Unless Congress raises federal borrowing cap, government will shut down on Oct 1 as it will run out of money to pay bills

Why will government stop funding services?

WASHINGTON—The Department of Homeland Security (DHS) announced today a limit of 14,000 nonimmigrants for fiscal year (FY) 2014 for the Commonwealth of the Northern Mariana Islands (CNMI)-Only Transitional Worker (CW-1) program. DHS published the notice in today’s Federal Register.