I am quite naive in these matters but I see two reasons why this won't happen: 1). This will effectively tear down the security theater (again, I assume this is what it is and may be uninformed that there is a real threat). 2). It is difficult to train a large number of personnel to perform behavioral analysis given the traffic the US airports handle.
Israeil has a small population/traveler count and a relatively direct threat. The US has a huge population/traveler count and a vague possibility of threat.
