Thousands of Americans had long planned trips to Yosemite National Park for Father’s Day weekend — but the White House is encouraging them to arrive before 8 a.m. to avoid conflicting with President Barack Obama’s weekend visit to the park. The First Family is scheduled to visit Carlsbad Caverns in New Mexico and Yosemite on a lightning tour through the West. According to the Fresno Bee, Obama will be the first sitting president to visit Yosemite since John F. Kennedy in 1962.