I would say right now and in the past (on average). If you were to quantify xenophobia (as a number). It's pretty high in the US (like 7-8 out of 10).... I'm not sure I agree that other countries are "just as bigot/racism/etc".
I am not sure how you qualify xenophobia, but in the way I see it, there is no way I would agree that 70-80% of Americans are xenophobic.
Take Canada in terms of how it treats groups.
http://aptn.ca/news/2015/05/02/inuk-soldier-wanted-die-decade-racism-sexual-harassment-broke/
Just do a quick google search and you will see that just about every country has had a horrible past to some group or another. People can be real assholes. The US is not exempt from this sadly. What I can say for sure is that in the long run we have gotten better. You will always have times when stupid fears take over, but eventually those fears subside and we get back on track.
Do you think there is a country out there that has not had a bad past? Canadians are probably better toward Muslims, but they can be real bastards too.