UPDATE (March 15, 2018) : Please be advised that the United States Customs and Border Protection Waiver Office located at the Toronto Pearson Airport is again accepting US Entry Waiver applications.
Please note that their business hours have changed. They will accept US Entry Waiver submissions on Tuesdays only, from 8:00AM to 4:00PM.
Our recommendation for alternate border crossings in the area where you are able to submit entry waiver applications are the Buffalo/Niagara Falls crossings (Peace Bridge, Rainbow Bridge, Queenston/Lewiston) or the Detroit/Windsor Tunnel. For a complete list of submission points in Ontario, please refer to the following: