if a couple of Republican senators were to suggest that obama be investigated, it does not mean that he would be investigated. They ‘know that the republican leadership would not allow it to proceed. All that would happen is that the media would label the senators as nutcase “birthers”
In the Senate though, there are some Republicans who just got reelected with better than 70% of the vote and they won’t have to stand for reelection for six years. For example, Senator John Thune of South Dakota didn’t even have a Democrat challenger for reelection.
let’s say the senator from North Dakota get a moment of bravery, he would be informed that of he does not withdraw his comments he will not get get any support form the RNC during his next election. Money speaks and it takes a lot of money to have a successful campaign. Of course this leads to a whole new issue, why is the Republican leadership so afraid of obama?