NCIS: Los Angeles - Enemy Within

There is a Venezuelan politician who is pro-US who is to visit America and is of course a target for assassination.  The twist is that a US government employee has been studying the politician's speeches and believes he is lying and is an actual threat to the US, especially if he was to win power.  This employee goes missing and thus becomes the prime suspect in the assassination plot.  But is it ever this simple?
Not a bad episode but pretty run-of-the-mill.  I am sure there will be bigger stories to come as we race towards the season finale.