As Trump struggles, some Republicans talking 2020 challenge

NEW YORK (AP) — Mark Cuban isn't ready to launch a formal campaign to challenge President Donald Trump.Yet Cuban, an outspoken Texas billionaire who describes himself as "fiercely independent" politically, sees an opportunity for someone to take down the Republican president, who is increasingly viewed as divisive and incompetent even within his own party."His base won't turn on him, but if there is someone they can connect to and feel confident in, they might turn away from him," Cuban to