Buried deep in the more than 1,000-page tax-and-spending bill that President Donald Trump is muscling through Congress is an obscure tax measure that’s setting off alarms on Wall Street and beyond.The item — introduced in legislation that passed the House last week as Section 899 and titled “Enforcement of Remedies Against Unfair Foreign Taxes” — calls for,

White House officials maintain bankers’ concerns are overstated and discount expected revenues from the president’s tariffs.