RPT-GRAPHIC-U.S. sanctions on Venezuela would reroute crude, leave refiners short Jan 23 - Potential U.S. sanctions on Venezuela's crude oil exports would cut off the nation from Gulf Coast refiners that are among its biggest customers, likely forcing it to send more crude to China, India or other Asian countries, traders said on Wednesday.U.S. refineries that depend on Venezuela's heavy crude would have even more trouble securing supplies as Canadian and Mexican crudes are often not as discounted and are limited in availability.The United States is considering moves to cripple Venezuela's oil shipments, which account for nearly all of the country's exports, in response to the reelection of President Nicolas Maduro that was widely viewed as a sham. Washington has recognized opposition leader Juan Guaido as Venezuela's president as protests against Maduro erupted across the country. It is also considering sanctions on oil deliveries, a move it has until now resi