Week In Review: Tsarnaev, Breathalyzers, MBTA Oversight, Warren V. Obama

The prosecution presented its argument for the death penalty in the second phase of the trial of Dzhokhar Tsarnaev. On Monday, it's the defense's turn. Also, new questions about breathalyzer reliability force several Massachusetts DA's stop using the tests as evidence. And, the Baker administration wants a new control board for the MBTA. Plus, Senator Elizabeth Warren slams President Obama over a trade deal with a dozen Pacific Rim nations. President Obama is fighting back.

Marcela Garcia, editorial writer for The Boston Globe. She tweets @Marcela_Elisa.

Tom Keane, attorney and Boston Globe columnist as well as former Boston City Councilor. He tweets @tomkeaneboston.