Business travelers and nonprofit groups have complained about having their property taken and returned months later, if ever. They are saying these searches are invasive and a violation of individual property rights.
I don't know about you, but this policy makes me fear something other than terrorists.
The Fourth Amendment of the Constitution of the United States is not just an ideal for school children. It's the law of the land. Read it. Remember it if your laptop is seized.
Memo to anyone contemplating traveling to - or within - the US by air right now: just please don't, until there is some degree of sanity in US security practices!