Poland’s president and prime minister will visit the White House on Tuesday in an attempt to spur the US to send more aid to Ukraine, at a time when the new funds remain stalled in Congress. US President Joe Biden invited Polish President Andrzej Duda and Prime Minister Donald Tusk for meetings to mark the 25th anniversary of Poland’s accession to NATO, a historic step for the country after breaking free from Moscow’s sphere of influence. Duda and Tusk will also meet with US lawmakers in Washington on Tuesday, asking them to pass a new package delivering military aid to Kyiv and break the stan…