3. Does the Drug Enforcement Administration, or any other component of the Department of Justice, use "parallel construction" or any other similar technique to obscure the source of evidence that may be used in a criminal investigation?

4. Has any component of the Department of Justice ever used or given to any other federal, state, or local agency for their use, foreign intelligence surveillance information in a judicial or administrative proceeding without providing the notices required by law?

5. Under the doctrine announced by the U.S. Supreme Court in Brady v. Maryland, an accused has a right to examine evidence that may be favorable to the defense. Under Brady, if the government has deliberately obscured the source of evidence used in a criminal trial-though "parallel construction" or any other technique-what remedies are available to the defendant?

6. Has the Department of Justice launched its own investigation of this revelation? If so, when can the House Judiciary Committee expect to receive your preliminary findings?

Reuters reports "the matter will be discussed during classified briefings scheduled for September, Republican and Democratic aides said."

So did the Senators just sign on to the August 9 letter or did they raise additional questions?