President Obama called Donald Trump many unflattering things on the campaign trail. This week, he'll have to switch to "President-elect" in person. Obama called Trump overnight and invited him to the White House to talk about the presidential transition, reports the AP. The meeting could take place as soon as Thursday, though campaign manager Kellyanne Conway told CBS the details were still being worked out. She described the call as "cordial" and said the pair "talked well into the wee hours." Obama, who plans to address the nation at some point Wednesday, also called Hillary Clinton and conveyed his "strong admiration" for her campaign, said the White House press secretary. (More Election 2016 stories.)