What impact did the Korean war have on the American people?

Don't know why the poor rating on the answer above, I
agree completely.  I would add a couple of other effects the war had on Americans at
that time too.

First, this was the second major war
Americans had fought in one decade, which meant another draft which means the younger
brothers of those who had fought in World War II, and sometimes the same ones who had,
would be leaving again to fight another war they may not come home
from.

Second, Americans were unclear what we were fighting
for.  It ws an unpopular war, and Truman was an unpopular President because of it.  Once
the war ended in a cease fire, many Americans, and veterans for that matter, were angry
that we hadn't "won" and what had all the blood and sacrifice been for if they weren't
going to be allowed to win?

And it surely made them more
afraid of communism and the Soviet Union, as stated above, and more likely to vote for
hard core anti-communist politicians like Richard Nixon.