Former Vice President Joe Biden bemoaned the tone of Trump-era politics at a campaign stop in Iowa on Tuesday, previewing on his first trip to the leadoff caucus state how he might take on the Republican president should he seek the 2020 Democratic presidential nomination. 

President Donald Trump took to Twitter in the very wee hours Friday to continue his run-in with his critics over the series of suspicious devices sent to prominent Democrats this week. At 3:14 a.m., he tweeted, "Funny how lowly rated CNN, and others, can criticize me at will, even blaming me for the current spate of Bombs and ridiculously comparing this to September 11th and the Oklahoma City bombing, yet when I criticize them they go wild and scream, 'it's just n...