The Ibovespa plunged 2.1% to close at 134,432 on Tuesday as a worsening Brazil-US impasse, triggered by a Supreme Court ruling on the application of foreign laws, raised country risk and fueled a sharp repricing of domestic interest rates. Investors saw the decision as narrowing the scope for negotiation over Washington’s tariffs and heightening the likelihood of retaliatory measures. Banks led the decline, with Banco do Brasil (-5.8%), Santander (-4.6%), Ita