Pork Carnitas

3-4 lb boneless pork loin
2 cups chicken broth
1 can tomatoes and chilis
1 small onion, sliced
4 cloves minced garlic
1 tsp lime juice
1/2 tsp orange extract
1 tsp chili powder
1 tsp ground cumin
1/2 tsp oregano
1/2 tsp salt
1/2 tsp pepper

Place all ingredients in roaster pan in 325 degree oven and cook until tender enough to shred (about 3 1/2 to 4 hours).  Serve with flour tortillas, guacamole, and salsa