As per current regulations the spouse and/or child of a TN visa worker “shall not accept employment in the United States unless otherwise authorized.” 8 C.F.R. 214.6 (j) (3).
Highly skilled professionals who are eligible for TN are not able to move to the US when their spouse is not a Canadian or Mexican national. Dependents of TN (TN-D) are not authorized to work and it creates a hostile ground for considering temporary non-immigrant visa.