John McCain lied about his record on support for the MLK Holiday. McCain never supported a Federal MLK holiday
Unless he changed his position today, he lied in his speech regarding the Federal holiday. He has always voted against funding the Federal holiday.

McCain did support an Arizona MLK holiday in 1987. He subsequently supported Arizona Gov. Evan Meacham rescinding an executive order creating the holiday (done by Democratic Gov Bruce Babbitt)

McCain subsequently supported a Proposition for a state holiday in 1992.

John McCain's record on MLK Day:

1983: McCain Voted Against Law Creating National Martin Luther King Holiday. In 1983, McCain voted against passing a bill to designate the third Monday of every January as a federal holiday in honor of Dr. Martin Luther King Jr. That was the year the holiday was passed into law, supported by 338 members of the House and 78 members of the Senate. [1983 House Vote #289, 8/2/1983; 1983 Senate Vote #303]

1987: McCain Supports AZ Governor's Effort to Rescind Martin Luther King Day as State Holiday. In 1987, Arizona Governor Evan Mecham rescinded "what he termed an illegal executive order by his predecessor, Democrat Bruce Babbitt, to establish a state holiday honoring the Rev. Martin Luther King Jr." Speaking to the Arizona Teenage Republican Convention, when asked about Mecham's decision to rescind the holiday, "McCain said that he felt Mecham was correct in rescinding the holiday." [Washington Post, 1/14/1987; Phoenix Gazette, 4/13/1987]

1989: McCain Urged Lawmakers to Create State Holiday, But Expressed Opposition to Federal Holiday. In 1989, McCain expressed his support for a state law recognizing an Arizona Martin Luther King Jr. holiday. But, McCain said, "I'm still opposed to another federal holiday... but I support the (Arizona) Martin Luther King holiday because of the enormous proportions this issue has taken on as far as the image of our state and our treatment towards not only blacks but all minorities." [Phoenix Gazette, 5/2/1989]

1992: McCain Endorsed Proposition Creating State Holiday. "McCain endorsed Proposition 300, which would establish a paid state holiday honoring the Rev. Martin Luther King Jr." [Phoenix Gazette, 10/28/1992]

1994: McCain Voted To Strip Federal Funding From the MLK Federal Holiday Commission. In 1994, McCain voted to prohibit federal funds for the Martin Luther King Jr. Federal Holiday Commission. The Commission was established in 1984 "to encourage the observance of King's birthday." According to Al King, head of the California chapter of the commission, the organization "helped keep 'senators' and 'representatives' feet to the fire to recognize the holiday." [1994 Senate Vote #127, 5/24/1994; Atlanta Journal-Constitution, 5/24/1995, 5/26/1995]

Yes, the article is from FoxBusiness, but it's a Democratic National Committee review.

Here is McCain's stance on the Confederate flag from the same group.

Late 1999: McCain Said He Wasn't Offended By the Flag. In 2000, McCain said of the flying of the Confederate Flag in South Carolina, "To me personally, I understand how it could be offensive to some people, but I had ancestors who fought in the Confederate army and I thought they fought honorably." [AP, 11/5/1999]

Early 2000: McCain Called The Confederate Flag "Offensive" And A Symbol Of Slavery. McCain appeared on "Face the Nation" and recognized the offensive symbolism of the Confederate flag. McCain said, "The Confederate flag is offensive in many, many ways, as we all know. It's a symbol of racism and slavery." [CBS News, Face The Nation, 1/9/00]

A Day Later, Aides Say He Misspoke. The next day, "McCain reversed himself and called the flag 'a symbol of heritage' ...Aides said he had misspoken in the television interview." [New York Times, 1/12/2000]

2006: McCain Conceded He Lied In 2000 to Win Political Points With the Confederate Flag, Called It "An Act of Cowardice." Following the 2000 South Carolina primary, McCain admitted that he had lied about his position on the confederate flag in order to win political points while battling George Bush in the South Carolina. McCain admitted, "I feared that if I answered honestly, I could not win the South Carolina primary, so I chose to compromise my principles. I broke my promise to always tell the truth." Speaking on the incident in 2006, McCain went further, saying, "The flag in South Carolina. I said that that was a state issue [in 2000]. It's not a state issue. It's a symbol that should not fly over the state capitol anywhere in America. ...I said that it really wasn't any of my business, was basically what I said. That was an act of cowardice." [New York Times, 4/20/2000; CNN, 5/24/2006]

McCain will get a pass on his misrepresentation of his feelings about the National MLK holiday, just as he gets on a whole host of other issues.

McCain will say whatever he needs to say to get elected