Donald Trump's joint appearance with Polish President Andrzej Duda in the battleground state of Pennsylvania has been canceled, according to a source familiar with the Republican presidential candidate's plans.

Polish President Andrzej Duda and the U.S. presidential candidate from the Republican Party Donald Trump may meet in the state of Pennsylvania. In the event of

Donald Trump plans to appear in Pennsylvania on Sunday with Poland’s president, Andrzej Duda, in a show of support from one of his staunchest foreign allies in one of the must-win states of the presidential election.