I was having some trouble finding the best way to counter a certain strategy used multiple times on me. I am having trouble dealing with mass MG nest placement. I typically play Chimera and Cartel, and one issue I run into is the massive amounts of MG nests when playing against U.S. This typically happens mid game when I'm trying to advance. Instead of having a large army, the opponent stacks massive amounts of MG nests back to back. They keep doing this and I can't really stop it. With their very decent HP, it eventually becomes this non stop growing wall that keeps pushing me back.
Here is one replay showing an example of what I mean -
http://www.gamereplays.org/actofaggress ... &id=306014
What is the best counter to this tactic? I'm sure there are many mistakes I am making in this replay, and I'm sure there is a simple answer of "Simple. Have a bigger army to squish it before it starts." However, I was just looking for some advice on how to counter leading up to that point (look out for it), and when it starts, what should I do to make it stop

Thank you