On July 22, 2005, the first anniversary of the release of the 9/11 Commission Report, McKinney held a briefing on Capitol Hill to address alleged outstanding issues regarding the 2001 attacks on the US. The day-long briefing featured family members of victims, scholars, former intelligence officers and others who critiqued the 9/11 Commission account of 9/11 and its recommendations. The four morning panels addressed flaws, omissions, and a lack of historical and political analysis in the commission's report. Three afternoon panels critiqued the commission's recommendations in the areas of foreign and domestic policy and intelligence reform. An Atlanta Journal-Constitution editorial said that the purpose of the event was to discuss whether or not the Bush administration was involved in the 9/11 attacks, expressing surprise that McKinney was once again taking on the issue that was believed to have cost her House seat. The Journal-Constitution declined to publish McKinney's reply. The 9/11 Commission has sealed all the notes and transcripts of some 2,000 interviews, all the forensic evidence, and both classified and non-classified documents used in compiling its final report until January 2, 2009. McKinney's interest in 9/11 relates specifically to what she expresses as her opposition to excessive government secrecy, which she has challenged with numerous pieces of legislation.
During the Katrina crisis, evacuees were turned away by Arthur Lawson's Gretna police when they attempted to cross the Crescent City Connection Bridge between New Orleans and Gretna, Louisiana. McKinney was the only member of Congress to participate in a march across the Crescent City Connection Bridge on November 7, 2005, to protest what had happened on that bridge in the aftermath of Hurricane Katrina.
In response, McKinney introduced a bill on November 2, 2005, that would temporarily deny federal assistance to the City of Gretna Police Department, Harry Lee's Jefferson Parish Sheriff's Office, and the Crescent City Connection Police Department, in the state of Louisiana. The bill was referred to the House Judiciary Subcommittee on Crime, Terrorism, and Homeland Security, but was not acted on. However, in August 2006, a grand jury began an investigation of the incident. On October 31, 2007, the Grand Jury ruled not to charge anyone. The Grand Jury accepted Gretna Police Chief Arthur Lawson's explanation, "Some of the people in the crowd acted aggressively and threatened to throw one of the officers off the bridge, the chief said. The shot was fired over the officer's shoulder and over the side of the bridge.
The Congressional Black Caucus' Omnibus Bill (HR 4197) was introduced on November 2, 2005, to provide a comprehensive response to the Gulf Coast residents affected by Hurricane Katrina. The second title of the bill was submitted by McKinney, seeking a Comprehensive Environmental Sampling and Toxicity Assessment Plan, or CESTAP, to minimize harm to Gulf Coast residents from the toxic releases into the environment caused by the hurricane.
At the request of McKinney, the Select Bipartisan Committee to Investigate the Preparation for and Response to Hurricane Katrina, chaired by Thomas M. Davis, held a previously unscheduled hearing titled "Voices Inside the Storm" on December 6, 2005.
On November 18, 2005, McKinney was one of only three House members to vote for H.R. 571, introduced by House Armed Services Committee chairman Duncan Hunter, chairman of the Armed Services Committee, on which McKinney sat. Hunter, a Republican, offered this resolution calling for an immediate withdrawal of U.S. forces in Iraq in place of John Murtha's H.J.Res. 73, which called for redeployment "at the earliest possible date." In her prepared statement, McKinney accused the Republicans of "trying to set a trap for the Democrats. A 'no' vote for this Resolution will obscure the fact that there is strong support for withdrawal of US forces from Iraq ... In voting for this bill, let me be perfectly clear that I am not saying the United States should exit Iraq without a plan. I agree with Mr. Murtha that security and stability in Iraq should be pursued through diplomacy. I simply want to vote 'yes' to an orderly withdrawal from Iraq."