Mix in a food processor, flour, sugar, salt.
Add in butter. Mix for 10 seconds. Stop.
Add in water. Mix for 5 to 10 seconds, just until you see dough form. Stop.
Pour mixture into plastic ziplock type bag. Form with hands into a ball.
Refrigerate for at least 30 minutes, preferably longer.
When you remove from fridge, let sit for about 15 minutes.
Use a floured surface to roll out dough. Divide dough 2/3 to 1/3. The 1/3 will be used for the stars and stripes.
Use cookie cutters to make the shapes.