Sen. Marco Rubio (R-FL) on Sunday said he doesn't believe that human activity is behind climate change.

"I don't agree with the notion that some are putting out there, including scientists, that somehow there are actions we can take today that would actually have an impact on what's happening in our climate," he said on ABC's "This Week." "Our climate is always changing. And what they have chosen to do is take a handful of decades of research and say that this is now evidence of a longer-term trend that's directly and almost solely attributable to manmade activity, I do not agree with that."

Defense Secretary Chuck Hagel on Sunday said he was open to looking at the military's ban on transgender service members and potentially reworking the rule.

"I do think it — it continually should be reviewed. I'm open to that, by the way. I'm open to those assessments, because, again, I go back to the bottom line. Every qualified American who wants to serve our country should have an opportunity if they fit the qualifications and can do it," he said on ABC's "This Week." "This is an area that we — we've — we've not defined enough."

President Obama on Saturday congratulated Michael Sam, who became the first openly gay NFL player on Saturday when the Rams chose him in the draft.

"The President congratulates Michael Sam, the Rams and the NFL for taking an important step forward today in our Nation’s journey. From the playing field to the corporate boardroom, LGBT Americans prove everyday that you should be judged by what you do and not who you are," the White House said in a statement.

Republicans have come under fire for using the select committee to investigate Benghazi as a way to fundraise for the 2014 elections, but Rep. Trey Gowdy (R-SC), the Republican leading the select committee, tried to turn the attention toward Democrats on Sunday.

"My friend and colleague Tommy Cotton from Arkansas did a magnificent job on the House floor of pointing out the duplicity and hypocrisy of Democrats all of a sudden concluding that certain things are above politics," Gowdy said on "Fox News Sunday."

Rep. Louie Gohmert (R-TX) on Thursday accused Comcast of trying to keep conservative pundit Glenn Beck's network, The Blaze, off of television.

During a hearing in the House Judiciary Committee on the Comcast-Time Warner merger, Gohmert floated the theory that Comcast while Comcast launched Al Jazeera America, the company refused to let The Blaze purchase a network it owned.

Pennsylvania Gov. Tom Corbett (R) said on Thursday he will not appeal the a state judge's decision striking down a law that required state residents to show photo identification in order to vote, the Associated Press reported.

While Corbett said he would not challenge the decision on the Pennsylvania law in its current form, he defended voter ID laws in general.

Infighting within the GOP spilled out into the public on Thursday with a Republican House member bashing a libertarian-leaning colleague as "Al Qaeda’s best friend in the Congress."

The comments from Rep. Devin Nunes (R-CA) were targeting Rep. Justin Amash (R-MI), who is facing a primary challenger and has been a vocal critic of the National Security Agency's surveillance programs.

"He's been leading the charge and not telling the truth about [NSA surveillance policies]," Nunes said in an interview with Politico. “He’s been fanning the flames, and it gets to the point where my assessment is this is a guy willing to work with San Francisco Democrats to protect bait fish, and at the same time he’s Al Qaeda’s best friend in the Congress."

After two armed men threatened a Bureau of Land Management wrangler on Tuesday in western Utah, workers are removing BLM logos from their vehicles to help avoid additional incidents, the Salt Lake Tribune reported on Thursday.

The wrangler was driving on a highway near Mills, Utah when two people in a pick-up truck pulled up along side the vehicle. The occupants "told him he was No. 1 with that certain gesture," Eric Reid, the wrangler’s supervisor at the BLM Fillmore Field Office, told the Tribune.

A diplomat at the Russian embassy in Washington, D.C. wrote various sexist comments about the members of the band Pussy Riot, according to emails obtained by Buzzfeed.

Both the Russian diplomat and the U.S. official who gave the 2012 emails to Buzzfeed were granted anonymity by the outlet.

Sen. Marco Rubio reacted with indignation on Wednesday to comments by former Florida Gov. Chralie Crist, who earlier this week explained his decision to switch parties from Republican to Democrat was fueled in part by racism within the GOP.

"I think it's ridiculous and silly," Rubio told Fox News host Neil Cavuto. "First of all, I'm even cautious to even dignify that with a serious response. My prediction is by the end of this election, even Democrats will be embarrassed that Charlie Crist became a Democrat."

Crist had explained to Fusion's Jorge Ramos on Tuesday why he left the Republican party and why he was now running for his old office as a Democrat.