The White House said it is confident the CLARITY Act, a U.S. crypto market structure bill, can advance when the Senate returns in mid-September, though negotiations with Democrats are still needed ahead of a Sept. 15 cloture vote requiring 60 votes. White House digital assets adviser Patrick Witt said he is "genuinely optimistic and bullish" on the bill at the SALT conference in Wyoming. The main unresolved issues are how the legislation should treat stablecoin rewards and whether it should include tougher ethics rules tied to President Donald Trump's crypto business. A previous bipartisan compromise would ban rewards for simple holding while allowing them for transaction and payment activity, but that issue has reopened. Another proposal under review would expand enforcement of conflict-of-interest rules by giving state attorneys general authority, while existing restrictions discussed by Trump would bar public officials and their spouses from directly issuing or sponsoring digital assets, allow investment in digital assets, and expire in January 2029.