India, July 28 -- American households are bracing for a prolonged period of elevated consumer costs as US President Donald Trump advances a comprehensive restructuring of the nation's trade barriers, colliding head-on with persistent economic ripples from the regional conflict involving Iran.

The administration's rollout of permanent Section 301 duties, designed to replace temporary global tariffs that recently expired, covers virtually all incoming merchandise, injecting fresh volatility into supply chains already strained by international energy shocks.

The convergence of aggressive trade enforcement and geopolitical turbulence has left economists and financial analysts warning of renewed pressure on consumer wallets.

While the broad...