Sure, there haven't been a ton of picks from the States. But that should be a red flag too, don't you think? Other teams seem to get productive guys out of the USHL, high school, and college ranks. Our "best" performance though in 15 years was 2005 and 2006, where we took Chorney, Vande Velde, and Petry in back-to-back drafts.
Since then it's looked like this:
Troy Hesketh- Bust. I remember this being a massive reach and lots of complaints even the day of that draft.
Tyler Pitlick- Decent fourth liner, still in the league.
Dillon Simpson- All of 3 NHL games, and debatable he gets even that with a different last name.
John McCarron- Bust.
Joey Laleggia- Bust.
Aidan Muir- See Hesketh.
Zach Nagelvoort- Bust.
Tyler Vesel- Bust.
Caleb Jones- The most promising US prospect we have.
John Marino- I understand he wasn't going to sign but obviously Chiarelli didn't go a good enough job here 1) identifying the talent 2) making sure he felt like he had a chance in our org.
Graham McPhee- I just don't see it, nothing four years out indicates a player.
Skyler Brind'Amour- See above.
Phil Kemp- Sure, could be something yet.
Mike Kesselring- I seem to disagree with everyone here, don't think he pans out.
So in fourteen years, our best hits are Pitlick, Jones, and Marino. That's pretty underwhelming again given it's an entire country with multiple leagues and levels to evaluate.
I agree that a bunch of these picks were pretty bad. I recall many a person on HFOil going "WTF" on several of these picks when they were made given other seemingly better, safer, higher upside prospects still being on the board.
Jason Gregor recently had this good breakdown of NHL drafting since 1969 for reference over at OilersNation:
Has NHL Drafting Improved?
I did the math on the percentage of picks from 2006-2015 for rounds 2-3 and rounds 4+ that play 200+ games. For rounds 2-3 its 27%, while for round 4+ its 12%. So essentially that means every two years on average you should be drafting one 200+ game player in rounds 2-3 (4 picks x 27%) and one 200+ game player in rounds 4-7 (8 picks x 12%).
So given those numbers let's look at who all the Oilers have drafted since 2006 (not just Americans) in rounds 2-7 who have played 200+ games:
Edmonton Oilers Draft History at hockeydb.com
2006 - (2) Jeff Petry - GP: 680
2007 -
2008 -
2009 - (2) Anton Lander - GP: 215
2010 - (2) Tyler Pitlick - GP: 248
2010 - (2) Martin Marincin - GP: 227
2011 - (4) Tobias Rieder - GP: 434
2012 - (3) Jujhar Khaira - GP: 218
2012 - (4) Erik Gustafsson - GP: 221
2013 -
2014 -
2015 - (4) Caleb Jones - GP: 60
2015 - (5) Ethan Bear - GP: 89
2015 - (6) John Marino - GP: 56
So the Oilers had 18 2nd/3rd rounders between 2006 and 2015 and went 5/18 = 27.7%. That's pretty much bang on average. They also had 42 4th - 7th rounders and if we assume Jones, Bear and Marino will play 200+ then that's 5/42 = 11.9%. This is also average. However, if we omit 2015 then between 2006 - 2014 the Oilers went a woeful 2/38 = 5.2% in rounds 4-7, and of those 2, most of those games were played for other teams. In fact 55.6% (1,361/2,448) of the GP shown above were played for teams other than the Oilers which obviously detracts from the positive impact of the drafting performance as well.
So the Oilers have actually done okay overall drafting out of the US given most of the players picked out of the US were drafted in rounds 4-7, they've just been bad at getting much out of the the guys who have turned into players. Petry and Pitlick's best years have been played for other teams, while Marino didn't sign with the Oilers which sucked.