WASHINGTON (AP) — Some smart minds came together in the Oval Office. President Barack Obama welcomed the four American winners of this year's Nobel Prizes to the White House on Monday. The four Nobel laureates Obama met with are: — U.S. researchers Eric Betzig and William Moerner, chemistry. — Japanese-born U.S. scientist Shuji Nakamura, physics. — U.S.-British scientist John O'Keefe split, medicine. The White House says the meeting underscored Obama's commitment to science and highlighting the U.S.