As far as your team getting killed on insert, what I did was immediately position them behind the bus on your left. This seamed to keep them out of trouble.
The rest of the mission however...
This was the most bugged out mission of all. After taking back the U.S. side I decided to bring my team inside the building to protect them from the arty and the counter attack. Probably not necessary but hey these guys aren't quite perfect. Once I take out the counter attack I tried to move my team out and one guy would stay in the building even when using the Tac Map. On the first attempt #2 would get stuck. On the second attempt #3 would get stuck...and so on. I was finally able to move them after returning to their position and moving them 5 feet at a time to get them out the door and then they were fine. The Marines were another story. They would not take the "move" command, only the "follow" command. I tried using the Tac Map but still they would not budge, just follow. So I leave them behind and clear out the Mexican side of the bridge. That's when I get a message like " get ready for troops approaching from the SE. There was no one there. They were all at the W. That's when I notice the blue diamonds (Marines) on the bridge decide to come over but now I don't have control over them. After that everything went smoothly now that 3/4 of the mission is over.
For the most part the single player was a blast if only for the last mission. Multiplayer is quite another story.