Join Date: Feb 2003
Location: Alexandria, VA - DCA
Programs: BA Gold, American Airlines, Marriott Plat, Hilton Diamond, IHG Diamond
Posts: 5,075
Your flight (US#1408) from MSP to PHL has a very good on-time rating (89% on time+). Even if your flight is a few minutes late getting in to PHL, you should have no trouble going directly from your flight to the AMS departure gate in Terminal A. Just don't stop along the way for anything.
If you have the time to kill, you could change (or Move Up) to the 1:45 PM departure from MSP. Of course that gives you several hours to kill in Philly but it may offer peace of mind.