Sen. McCain turns 75

Sen. John McCain (R-Ariz.) received a slew of birthday tweets Monday.

Sen. Kay Bailey Hutchison (R-Texas) and Rep. Bob Latta (R-Ohio) were among the birthday greeters.

McCain, 75, acknowledged the birthday tweets with a joke about his age.

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Rep. David Schweikert (R-Ariz.) might disagree with McCain that he hasn't "taken care" as he has aged.

"Happy Birthday to the senior member of our delegation, @SenJohnMcCain. No idea where he gets all of his energy!" Schweikert tweeted.

The date of McCain's birth has been notable for more than one reason in the past. In 2008 on his birthday, McCain announced Alaska Gov. Sarah Palin was joining his ticket as the Republican vice presidential nominee at a rally in Dayton, Ohio.