US First Lady Michelle Obama has been helping to whip up support for Democratic presidential candidate Hillary Clinton. <br /><br /> She has joined her for the first time on the campaign trail, in North Carolina.<br /><br /> It is a battleground state that could play a pivotal role in the race between Clinton and her Republican rival Donald Trump. <br /><br /> “She (Clinton) has more experience and exposure to the presidency than any candidate in our lifetime. Yes, more than Barack, more than Bill,” said Michelle Obama.<br /><br /> “So she is absolutely ready to be commander-in-chief on day one and, yes, she happens to be a woman.”<br /><br /> Speaking in Ohio, Trump has promised to bar Syrian refugees from entering the US – if he wins the White House. <br /><br /> “A Trump administration is going to suspend immigration from terror prone regions and we will suspend the Syrian refugee programme. That was easy,” he said.<br /><br /> “We are not going to take to risk when it comes to the safety of the American people, no longer.”<br /><br /> Trump also claimed again that Clinton was corrupt, highlighting new emails released by Wikileaks. <br /><br /> The New York businessman currently trails his Democratic rival in most national polls.<br />