The vice president urged vigilance ahead of elections in the U.S. and Poland, in an attempt to assure the European ally that Washington takes the matter seriously.
Twitter users lit up at the suggestion, as did President Donald Trump.
It hands down prison sentences to people who connect the country to Nazi Germany.
Illiberal rulers from Venezuela to Poland are assaulting constraints on their power. In Italy, anti-elite populists are using the internet to empower citizens and upend representative government.
From Syria to Ukraine, a pesky and newly reinvigorated Vladimir Putin is testing the west. In this new geopolitical face-off, Poland has assumed key strategic importance and will no doubt play a hugely significant diplomatic and even military role.
How extreme will politics have to get before the Ukrainian establishment stands up to the far right? If the political mainstream doesn't act soon, Kiev's relationships with key diplomatic partners and even Poland could be severely tarnished.
WARSAW, May 24 (Reuters) - Polish President Bronislaw Komorowski conceded defeat to conservative challenger Andrzej Duda