By Hannah Lang and Judith Langowski (Reuters) – Last week, a pack of rice crackers at Sun Vin Grocery store on Mulberry Street in New York City’s Chinatown cost $4.99. But this week, after President Donald Trump’s tariffs on items imported from China took effect, the same crackers have a new price: $6.99. Chinatowns across the U.S. are feeling the effects of the escalating tariff war, as