"I do not agree ... that when the Congress gave the authorization to go to war that that gives sufficient legal basis for the surveillance," ... if the justification holds up, "you're going to have real trouble having future Congresses giving approval to presidents to go to war."
In other words, he's saying that if Congress perceives a president as stretching a resolution too far, it'll change Congress attitude about crafting and granting them. He's basically saying that he didn't have "extension of FISA" in mind when he signed on to the AUMF.
Brownback said he wasn't opposed to the administration conducting surveillance but that the legal basis had to be straightened out.
Is this an "off the reservation" attitude? The premise (which we don't have precise facts to gauge) was "Bush has confirmed that he approved allowing the National Security Agency to monitor Americans without seeking warrants."
Oh, Senator....
"Brownback said he wasn't opposed to the administration conducting surveillance but that the legal basis had to be straightened out. "
That's a key point.