Bush's warrantless wiretaps had certain criteria. The call had to be between a phone in the US and originiation or be placed to a number overseas and already on a watch list. Warrantless wiretaps wholly within the United States were limited to roving wiretaps. A wiretap authorized by a judge in one jurisdiction would be authorized in another jurisdiction without a new warrant.
obama's wiretaps are based on how he feels.
Bullshit.
There is a difference between a wiretap and a pen register.
Bush searched tens of millions of Americans' phone records without a warrant. This is similar to placing a pen register on tens of millions of phones.
A pen register only notes what phone numbers were called from a particular phone. So Bush searched your, mine, and tens of millions of other Americans' phone logs to see who we called.
If you called a number on the watchlist, you became a subject of interest. The FBI could then go to your local library, say, and get the record of all the books you have read. They would then give the librarian a non-disclosure letter (NDL) forbidding the librarian from informing you the FBI is sniffing around your life. And if you happened to have checked out
How I Learned To Love Islam, then you were fucked. Your property and personal papers, emails, and whatnot would then be searched while you were out.
All without a warrant.
Then, if you called a friend overseas, the FBI could listen in. This is the wiretap part of the scheme.
All this without any judicial oversight whatsoever.
When the searching of tens of millions of phone records came to light, there were people who were prepared to sue the phone companies for turning those records over to the Department of Fatherland Security. So the Republican Congress then swung into action and gave all of them retroactive immunity from prosecution or civil lawsuits.
Meanwhile, all the present day rabid dog idiots like yourself slept through all of this. Only now do they rise up in faux moral outrage over what has been happening for over a decade.