The U.S. dollar index rose 0.17% to 98.99 after a third weekly decline in four weeks had taken it to a three-month low. The dollar gained after the administration of President Donald Trump expanded sanctions on Iran and imposed 50% tariffs on Canadian goods, while markets also assessed reports that Treasury Secretary Scott Bessent could use part of the department’s nearly $1 trillion Treasury General Account to fund longer-term bond buybacks. The Canadian dollar fell 0.61% to C$1.385 per dollar, while bitcoin rose 2.05% to $78,993.42. Investors are watching U.S. inflation, income, spending and growth data, as well as remarks from Federal Reserve Chairman Kevin Warsh in Jackson Hole, Wyoming.