This subject (non-native) should be a big part of the main forum because it is a big deal for those environmental people.
It is time for the people that really care about the future of wild reproducing pheasants, in N. America, to speak up and clearly articulate their stand on this pheasant non-native business, because this issue will come back up again and again.
Maybe this information will a useful to other people in dealing with this issue.
First, some of our founding fathers released pheasants in an attempt to get a wild reproducing population started. George Washington released pheasants on his Mt. Vernon farm.
Second, look at a few wild emigrants that most people think are native but they are not native.
Ornithologists who study the Mallard duck will tell you the his range is the entire northern hemisphere, you will see wild mallards all over the world.
Most ornithologist believe that they came to N. America 5 to 10 thousand years ago. The came over from N. China, over the Bering Straits or over the Arctic circle which they still do to this day.
The Magpie that is common out west (and is expanding its range eastward) came over the same route but more recently.
Oldandnew mentioned heritage, that is a great point. I think of the Horse and the Cow (two non-native species that went wild) brought over by the Spaniards in the 15th century. These two non-native animal lead to a western/cowboy culture/heritage.
If it wasn't for those two animals we would not have words like "get the heck out of Dodge", the Dallas Cowboys, the Maverick, the Denver Broncos, Roy Rogers etc... I could go on.
The true pheasants were brought or introduced to Europe between 500 and 800 AD. The people over there know very well that wild pheasants are not native to Europe, but they treat the wild pheasants as a valuable resource that they enjoy having around. They don't look at the wild pheasant as "aliens" .
See the article below ( the last part of the article is in English):
http://www.zgap.de/pdfs/25_2.pdf
Food for thought.