In the Senate, Klobuchar has cultivated a worker-bee persona, not leading on divisive issues like immigration and focusing instead on curbing the cost of prescription drugs, addressing sexual harassment and protecting online privacy.
Trump worked to escalate the showdown Friday, reissuing threats to close the US-Mexico border to pressure Congress to fund the wall and to shut off aid to three Central American countries from which many migrants have fled.
Democrats say they are determined to obtain more information about meetings by Trump and Secretary of State Mike Pompeo with North Korean Leader Kim Jong Un, worried that Trump is so eager to make a "great deal" that he will give Kim too much.
Americans, as well as the rest of the world, are keenly watching the elections, whose results could impact President Donald Trump’s powers in matters of the legislature as well as in getting his nominees confirmed to judicial and other positions.
The president won Texas during the 2016 nominating process and in the November election. Now he's a central figure in midterm primaries. Republican Congressional candidates across the state have pledged fealty to Trump.
Altogether some 6,900 Americans have been killed in overseas wars since the September 11, 2001, attacks, the overwhelming majority under Bush and Obama. Since Trump took office in January, about two dozen US service members have been killed.