The first half of 2019 saw more than 25 + films releasing in the USA market. Among those only 8 films had managed to gross more than $50K from USA. Superstar Rajinikanth's Petta has performed extremely well in this region.
Here is the Top 5 Tamil Grosser in USA
Sivakarthikeyan's MrLocal ($67K), Arun Vijay's Thadam ($50K) and Rajiv Menon's Sarvam Thaala Mayam ($50k) are other films that had grossed more than $50k in the USA.