The Trump administration’s plan to slash corporate tax rates could free up more than $10 billion a year for U.S. oil explorers, opening new opportunities to boost drilling at a time of uncertainty in the marketplace. Crude prices in New York have fallen 10 percent since the end of 2016 as added drilling in America’s shale fields offset an OPEC-led drive to raise prices by cutting production. The U.S. push has spurred concern that another price rout could be just around the corner, following a two-year decline that saw prices fall as low as $26.05 a barrel in February 2016. Republicans led by President Donald Trump have said they want to cut the top corporate rate to 15 or 20 percent, from 35 percent now. That could mean more than $10 billion in savings for oil producers that are one of the country’s most-heavily taxed industries, according to Bloomberg […]