Sources: Possible suspect sought in Boston bombing  —  After the explosion: Moment-by-moment  —  (CNN) — Investigators scrambling to solve the fatal bombings at the Boston Marathon want to question a man seen on video as a possible suspect in the attack, two official sources with knowledge of the investigation said Wednesday.

A Senate in the Gun Lobby's Grip  —  SENATORS say they fear the N.R.A. and the gun lobby.  But I think that fear must be nothing compared to the fear the first graders in Sandy Hook Elementary School felt as their lives ended in a hail of bullets.  The fear that those children who survived …

Republicans pull plug on Mark Sanford  —  National Republicans are pulling the plug on Mark Sanford's suddenly besieged congressional campaign, POLITICO has learned — a potentially fatal blow to the former South Carolina governor's dramatic comeback bid.  —  Blindsided by news …

Feds arrest suspect in ricin-positive letters sent to Obama, senator  —  The ricin-laced letters sent to President Obama and Mississippi Sen. Roger Wicker were both postmarked April 8 and sent from Memphis, Tenn., signed “I am KC and I approve this message.”  A third letter went to Michigan Sen. Carl Levin.

Texas teacher claims she couldn't have fondled black student because she's racist  —  A teacher in Texas has invoked her own racism in a defense against charges that she fondled an African-American student in her first grade class at Northwest Preparatory Academy Charter School in Humble.

Move Over “Obama Phone,” Say ‘Hola!’ to the Marco Rubio Immigration Phone, AKA MarcoPhone  —  With the new ‘Border Security, Economic Opportunity, and Immigration Modernization Act’ finally being filed in the U.S. Senate, concerns over how much money the immigration reform bill will cost …

High Schooler Protests ‘Slut-Shaming’ Abstinence Assembly Despite Alleged Threats From Her Principal  —  A West Virginia high school student is filing an injunction against her principal, who she claims is threatening to punish her for speaking out against a factually inaccurate abstinence assembly at her school.

Ron Paul Institute opens amid split with Rand  —  'He has his opinions.  You'll have to ask him where he disagrees.  Not me,' says Ron Paul.  AP Photo  —  Close  —  Ron Paul made an impassioned plea for shuttering Guantanamo Bay Wednesday at a launch event for his new Ron Paul Institute for Peace and Prosperity.

Alleged McConnell Bugger Visited White House  —  Days before Progress Kentucky launched a Twitter offensive against Mitch McConnell, its executive director met with White House officials.  —  Via: J. Scott Applewhite / AP  —  WASHINGTON — The head of a group accused of illegally taping private meetings …

Tom Friedman Continues His Journey To Insanity (The Terrorists Win)  —  Times columnist and global raconteur Tom Friedman outdoes himself as he tries to put the Boston bombing into perspective:  —  Bring on the Next Marathon  —  By THOMAS L. FRIEDMAN  —  ...

Updated: Wife of ex-JP confesses, says her husband shot former Kaufman DA, his wife and top prosecutor  —  Kim Williams' Facebook profile photo, believed to be quite dated.  (Facebook)  —  Update 12:25 p.m.: Kim Williams' arrest warrant says she confessed to the entire plot, explaining her role and saying her husband was the shooter.