My question is this. Why- I repeat why- USA had approved a person who least respect in the world.
Huh? You mean, why did the US praise a person in 1980, when he was to do really badly in elections in 2000? Umm, because the situation was very different twenty years earlier?
This is silly. Your cherrypicking of his lousy election result in 2000 conveniently ignores the fact that Walesa took part in three
successive presidential elections after the fall of communism - and in the first elections after the fall of communism, Walesa won. Easily. He won the run-off with three-quarters of the popular vote.
The second time, in 1995 - another election you're conveniently ignoring by just picking the 2000 results - he lost the run-off by a hairwidth, getting half of the vote.
Then, as a political has-been who'd had his best times behind him, he tried again in 2000, and he was ignored - and got the 1% result you tout here. What in heaven's name is that last result supposed to say about how popular or right he was in 1980?
There is no doubt that Lech Walesa was extremely popular in 1980. In fact, he was obviously still very popular in 1990, once communism had fallen and people first got the freedom to choose their own president. In those elections, he ran on the popularity that he acquired as leader of the 1980 revolt of the trade union Solidarity against communism. And despite the fact that bitter infighting had already started within the Solidarity movement, he won.
In the first round, he received 6,569,889 votes, or 39.96% of the vote, while another candidate who came from the Solidarity movement and the 1980 revolt against communism, Tadeusz Mazowiecki, won a further 18% of the vote. Come the second round, all the supporters of Solidarity and opponents of the former communist regime banded together behind Walesa, and he won with a whopping 74.25%, or 10,622,696 votes, against Stanisław Tymiński.
So - yes, Walesa was a very effective and popular leader of the anti-communist opposition, and the 1980 revolt against communism; and that popularity carried him over into winning the first presidential elections in post-communist Poland.
He was not, however, as it turned out to be, an effective politician in the new system. Once the communist dictatorship was gone, his popularity gradually waned too, in no small part because of his own mistakes. Nevertheless, in the next presidential elections in 1995 he still got mighty close to winning again. He got 5,917,328 votes, or 33.11%, in the first round, and in the run-off he got 9,058,175 votes, or 48.3%, against Kwasniewski's 51.7%.
After that, things really went downhill for him, as the 2000 results show. But the fact that later on things went downhill for Walesa, says exactly nothing about whether he was popular in 1980, or whether the West (including both left-wingers and right-wingers) was right to praise him back then. His Nobel Peace Prize of 1983 was much deserved.