For most family-based immigration I-130 petitions the sponsor is required to complete USCIS Form I-864 Affidavit of Support. Form I-864 is used to verify that the sponsor meets the financial requirements to sponsor their family member for US permanent residence. See how to determine if a sponsor meets these income requirements.
The USMCA (NAFTA) makes hiring Canadian citizens and Mexican citizens on TN Visas relatively simple when compared to the other US work visa options. Canadians and Mexicans are both able to obtain TN Visa status without the formal sponsorship associated with the processes of obtaining H-1B Visas and US Green Cards. A TN visa is not considered formal sponsorship, here are a few reasons why.