Lech Walesa was once a trade-union activist. He was often arrested for speaking his mind against Communist oppression behind the Iron Curtain in Poland and for defying the Soviet Union. He was an electrician who, with no higher education, led one of the most profound freedom movements of the 20th century — Solidarity. He became president of Poland and swept in reforms, pushing the Soviet Union out of his homeland and moving the country toward a free-market economy and individual liberty. And President Obama doesn’t want him to set foot in the White House.