The restriction proposed by Senator Kirsten Gillibrand would bar members of Congress, the US president and their spouses from “issuing or sponsoring their own digital assets.” Senator Kirsten Gillibrand, one of the US lawmakers behind negotiations for a digital asset market structure bill in Congress, has proposed barring elected officials and the president from issuing or sponsoring their own tokens, citing President Donald Trump’s and First Lady Melania Trump’s memecoins.