Four Democratic members of Congress tried in vain to enter an immigration processing facility near Chicago.

Michael J. Madigan, who for decades was one of the most influential Democrats in Illinois politics, was convicted of conspiracy, bribery and wire fraud.

© Ashlee Rezin/Chicago Sun-Times, via Associated Press

Amid unrest in California, Republicans on the House Oversight Committee pressed the governors of three blue states on their immigration policies in an acrimonious eight-hour hearing that often veered off course.

© Kenny Holston/The New York Times

The deviant behavior of a subatomic particle might point to undiscovered forms of matter and energy in the universe. Or it might not.

© Reidar Hahn/Fermilab