It's an effort on the part of the U.S. government to register "superheroes" as official crime fighters instead of illegal vigilantes. I don't understand the reason for this resistance, unless you plan on acting against this country. All non-registered "supers" must be dealt with to prevent acts of super-powered terrorism. This has obviously been unsuccessful due to the efforts of the "resistance," which has indirectly caused the deaths of many.
Do what's right. EDIT: (Forgot I signed out of Crimson XD)
@dragonenton: Ah, but I have a Teleporter as well. I full well intend on using Eleanor Lamb to the best of her abilities, which include telekinesis and teleportation.
Aside from that, here's my default battle plan which I can modify to fit whatever team I'm facing.
First, I send Boba and Jango out to take the flanks while Eleanor provides her services as a teleporter. We then slaughter everyday bystander in the battlefield, who shall be reanimated into zombies. During the commotion (during which you'll be being attacked from multiple directions) Subject Sigma will be planting plasmid traps around the battlefield. When the time is right, Delta and the Lickers will preform a charge, which should go well considering you're being attacked from the sides and behind by The Fetts and Eleanor. During the charge, I'll keep Sigma on trapping duty as well as support fire, in hopes of trapping you into a corner.
The dead looking to you as a meat snack could be a hindrance as well.