Isn't it odd that nobody truly knows for certain if Kirkwood, Schneider, , etc were actually manufactured here? No old pictures of the factory or workshops showing these guns being built, no articles written back then detailing their manufacture, nothing out there that positively confirms that they actually built guns from the ground up. I'm in the camp of putting a gun together from sourced parts doesn't necessarily make you a gun manufacturer or qualify it as being from the USA.
One of the prettiest and well built "American" guns I've ever seen in person was built, put together , finished or brought into this country by George T. Abbey, Chicago. This gun was obviously English, can't be sure if it was brought to the USA in the white and Abbey finished it, or it was brought in as a completed gun. My guess is...it was finished and ready for action when it left England.