In a medium bowl, combine graham cracker crumbs, melted butter, and sugar. Press mixture evenly into the bottom and up the sides of a 9-inch pie plate.
Bake for 8-10 minutes until golden brown. Let cool completely.
In a large bowl, beat cream cheese and sugar until smooth. Stir in vanilla extract and sour cream.
Gently fold in the whipped cream until just combined.
Divide the filling into three equal portions. Tint one portion red with food coloring, another blue, and leave the third one white.
Spoon alternating dollops of the red, white, and blue filling into the cooled pie crust. Swirl gently with a knife or skewer to create a marbled effect.
Dollop spoonfuls of strawberry jam and blueberry jam over the filling. Swirl again to create a patriotic pattern.
Refrigerate for at least 4 hours, or until firm.
Serve chilled.
Notes
For a cleaner swirl, chill the jams slightly before dolloping. You can also use different flavor combinations for the jams.