When my company was sold ,I wrote 3 letters to the president of Co. I am being layed off before people with less seniority than me.

I have been told to train other people to do my job. I thought my job was going overseas, because 90% of the Co is . The company I worked for was sold to this very large Co. At the begining of this year I wrote a few letters to the president of the Co. telling him how unhappy we were here, got a terrible raise, health insurance horrible etc. Now I think this is why I am being layed off. Anything I can do about this?