My wife and I live in the U.S. She has been having health issues (Cancer) diagnosis in March 2009. She has a niece that is has been in Canada since September 2006. Her niece is currently waiting for her Canadian Permanent Resident Card. She would like to come to the U.S. to help out with my wife once she receives her PR card. I would like to know how long she would be able to stay with us.
Depending what nationality your niece is, she may or may not require a US Visitor Visa to enter the US. Some countries are visa-exempt or under the visa waiver program. If she is from a country where US visas are required, she will have to apply for a US Visitor Visa at a US Consulate. Typically, the duration of US visitation is up to 6 months at a time. However, it is important to always show “temporary intent” upon entering the US as a visitor otherwise you can be refused entry.