gop-backed audit of the results in arizona's largest county maricopa has come to an end. the final results shows president biden defeated donald trump. it has cost arizona taxpayers millions of dollars. 9 and after weeks of division house democrats are preparing to vote for biden's $1.2 trillion bipartisan infrastructure bill. though some democrats predict the bill will fail speaker pelosi said the vote will happen on monday. now back to "dateline." welcome back to "dateline." i'm craig melvin. convicted for murder malcolm scott and de'marchoe carpenter wrote thousands of letters asking for help proving their innocence. finally eric cullen answered. cullen methodically poked holes in the prosecution's case. now they would visit key witness