tom akerman reports from massachusetts, the state at the forefront of reform. >> reporter: dennis mayorppily married father of two, but the 19 years he spent in prison for rapes he did not commit are never far from his mind. nor is the realization that the victims were so mistaken in picking him as their attacker. >> i was trying to reason why it all happened? how could they misidentify me. the first victim said i didn't have a mustache the second said i did. >> reporter: mayor is among 321 men who have been exonerated thanks to scientific testing more than 70% of those wrongful convictions relied to some degree on inaccurate eyewitness testimony. jennifer was sure he man she sent to jail committed the crime. >> i can remember thinking to myself, if that's wrong, be bobby pool raped me and it wasn't ronald cotton then maybe everything i thought was true is not true. >> reporter: they have recognized the fallibility of eyewitness indication. the police chief trains his officers in how to avoid misidentifying witnesses. >> i'm going to leave the room. >> reporter: they tell the victim to

tom akerman has this update. >> reporter: this driving a big wedge between the white house and president's democratic followers in the house, who are -- many of them outraged as what many see as the white house caving in to republicans on several issues most prom next -- prom nextly one that would give big banks some kind of protection. in the words of one lawmaker the president may make a case of being a lame duck president to get along with republicans for the final year and a half or so of his administration, but in the case of democrats who are hoping to make big electoral gains in congress in 2016, this will be seen as facilitating another potential bailout for the big banks. >>> ukraine's defense minister has called for a doubling of the defense budget. he says the boost is needed to help deal with the ongoing conflict in the east. the number of soldiers fighting separatists rebels in eastern ukraine will now grow to a quarter of a million. >>> in britain it's estimated that there are up to 120,000 illegal migrants. even though married to british citizens are now feeling mar genera