Bill Whitaker reports on the case involving 12 Russian agents who interfered with the 2016 presidential election. Scientists have developed a way to decode human thoughts and emotions using MRI's and computer analysis. Lesley Stahl has the story. The heart-wrenching photo was seen all over the world. A man with his 2-year-old daughter inside his shirt -- face down on the bank of the Rio Grande River, drowned after trying to illegally enter the U.S. by swimming across. Tania Avalos, the wife and mother talks about the tragic incident -- for the first time -- with Sharyn Alfonsi. Those stories on tonight's "60 Minutes." 
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