Tether, the issuer of USDT, the world's largest stablecoin, is actively expanding into the US market, benefiting from political support from the Trump administration and annual profits exceeding $10 billion. Chief Executive Officer Paolo Ardoino outlined plans for its new US token USAT and is striving to achieve a valuation of $500 billion. Meanwhile, the company faces regulatory scrutiny and concerns regarding its holdings of $122 billion in US Treasury bonds and the lack of comprehensive audits.