Relations between the two executive organs , however , returned to animosity under the presidency of Lech Kaczyński and Prime Minister Donald Tusk . Political rivals for years , fueled by the 2005 presidential poll which saw both men as the main challengers , Tusk 's center-right Civic Platform toppled President Kaczyński 's twin brother Jarosław 's government in the 2007 parliamentary election . Tusk 's support for stronger integration into the European Union , including the signing of the Lisbon Treaty , and a rapprochement with Russia , put Kaczyński directly at odds with the prime minister . From 2007 until Kaczyński 's death in the Smolensk air disaster in 2010 , policy differences between the two offices were a constant source of division , with the president employing his limited veto powers numerous times over the government 's legislation ; Tusk 's government lacked a 60 percent threshold to overturn such vetoes . In response , Tusk made no secret his party 's desire to replace Kaczyński in the 2010 presidential election . Although Tusk and Kaczyński found several areas of compromise , clashes between the Chancellery and the Presidential Palace became a regular feature in both the domestic and international political scenes for the next two and a half years . Frustrated by Kaczyński 's veto , Prime Minister Tusk argued for a constitutional amendment in November 2009 to strip the presidency of its veto powers , declaring : " The president should not have veto power . People make their decision in elections and then state institutions should not be in conflict ... Let us change some provisions so we can have fewer conflicts and more cooperation . We propose changes to the constitution so that the centre of power lies with the government ... The presidential veto brings more harm than good . " Currently , both President Andrzej Duda and Prime Minister Mateusz Morawiecki originate from the Law and Justice party
Smolensk air disaster
2010 Polish Air Force Tu-154 crash
Prime Minister of Poland