Mine is only 10 per dollar

Earn 10 Bonus Miles For Every $1 You Donate To The National Parks
Since the end of 2000, American Airlines has worked with the National Park Foundation as a Proud Partner of the National Parks. One of American's roles as a Proud Partner is to raise money for Park projects, and AAdvantage members have generously donated more than $4 million to this effort. They have also been rewarded with millions of bonus miles. That's right. When you give $10 or more to American's Proud Partner campaign, you'll earn 10 bonus miles for every $1 given, and it's tax deductible. Please consider making an online donation* today or make a donation by calling 1-888-GO-PARKS. To ensure you receive your bonus miles, please have your AAdvantage account number handy. Plus, when you donate $125 or more to American's Proud Partner campaign, you'll receive a complimentary National Park Pass - a $50 value.