MIAMI (AP) — A court in Venezuela has upheld long prison sentences for six American oil executives detained in the South American country on corruption charges for more than four years. Venezuela's supreme court announced the ruling late Friday, disappointing family members who had hoped the surprise decision last fall to hear the appeal, and a recent jailhouse visit by a top State Department official, signified President Nicolás Maduro's government was looking to release the men as part of a gesture to engage the Biden administration in talks over U.S.