The Republican presidential field narrows, an iconic American company files for bankruptcy and yet another insider trading case makes the headlines. This and more in this week's Week in Pictures.
House Speaker John Boehner of Ohio, second from right, accompanied by fellow Republican leaders, gestures during a news conference on Capitol Hill in Washington, Wednesday, Jan. 18, 2012, to voice their opposition to President Barack Obama's decision to reject the Keystone XL pipeline. From left are, Rep. Tim Griffin, R-Ark.; Rep. Jeb Hensarling, R-Texas; Boehner; and House Majority Leader Eric Cantor of Va. (AP Photo/J. Scott Applewhite)
Oklahoma state Sen. Sean Burrage, D- Claremore, left, answers a question during a news conference in Oklahoma City, Thursday, Jan. 12, 2012. At right is state Sen. Tom Adelson, D-Tulsa. Burrage and Adelson said they plan to file legislation that would require health insurers in the state to provide coverage for infants who are not covered under family plans or Medicaid. (AP Photo/Sue Ogrocki)
Supporters hold a placard that reads, "Welcome for working together with Myanmar's democracy icon Aung San Suu Kyi and President Thein Sein," as they wait to welcome Suu Kyi at the Yangon District Election Commission on Wednesday, Jan. 18, 2012, in Yangon, Myanmar. Suu Kyi registered to run for a seat representing Kawhmu, a poor district south of Yangon where villagers' livelihoods were devastated by Cyclone Nargis in 2008. (AP Photo/Khin Maung Win)
This screen shot shows the blacked-out Wikipedia website, announcing a 24-hour protest against proposed legislation in the U.S. Congress, intended to protect intellectual property that critics say could facilitate censorship, referred to as the "Stop Online Piracy Act," or "SOPA," and the "Protect IP Act," or "PIPA." (AP Photo/Wikipedia)
Anthony Chiasson, Level Global Investors LP co-founder leaves Manhattan Federal Court after being released on bail on charges of insider trading Wednesday, Jan. 18, 2012, in New York. Greed on Wall Street set a record, authorities said Wednesday as they unveiled a nearly $78 million insider trading case that involved at least seven financial industry professionals and included a hedge fund co-founder who triggered a single trade that earned $53 million in profits, the largest lone transaction ever prosecuted in Manhattan. SAC Capital, another fund involved in the probe is accused of using inside information to trade healthcare companies (AP Photo/David Karp)
Republican presidential candidate, Texas Gov. Rick Perry pauses while announcing he is suspending his campaign and endorsing Newt Gingrich, Thursday, Jan. 19, 2012, in North Charleston, S.C. Jon Hunstman, another Republican presidential hopeful dropped out earlier in the week. (AP Photo/David Goldman)