"President Obama said Thursday that Donald Trump's claim that November's election will be rigged is 'ridiculous' ... " (from "CBS NEWS, August 4, 2016, by REBECCA SHABAD") First of all, a mistake made by Obama is that Trump feared, not claimed, November's election will be rigged. Second of all, The ongoing campaigns of the US president election are somehow unfair, if not rigged. Trump's fear is not ridiculous because he was treated unfairly in the past. Let's pick three of those events.

1. As the present president, Obama overpraise Hillary Clinton that she is more qualified than him (actually than anyone, as he said) to be the US president. Really? If yes, why didn't you say this 8 years ago? Why didn't you invite her to compete Mitt Romney 4 years ago and you ended your presidency? And why did you make this statement at this very moment that you must leave White House months away? How selfish are you? If yes, You really put your interest over Americans' interests. Had the more-qualified president been sitting in the Oval Office, the US wouldn't have had so many shootings. How selfish is this president? How did this command-in-chief mislead the public of America? Fair? If no, how hypocritical is president Obama? Again, how did this command-in-chief mislead the public of America? Fair? Furthermore, should Mr. Obama, as the current head of the US government, be neutral to the competition of his possible successors? Sure, he should. Should he focus on his duty on the safety of Americans and allow the democracy run its way? Sure, he should. But he has engaged too much in wrong way. Fair?

2. About the schedules of debate. Donald Trump requested a better watching time of debate for Americans, which is a super good thing for the populace. Why cannot Hillary Clinton say 'no' to that scheduled date? Does she fear to face more Americans? Why cannot the organizer reschedule? Fair?

3. Donald Trump was insulted by a father of son killed abroad that Trump might have never read the US constitution at DNC, but Hillary Clinton was not insulted by the mother of diplomat Sean Smith killed abroad regarding reading constitution at RNC, nor was she insulted by a mother of son killed by illegal immigrant regarding reading constitution at RNC. Fair? Doesn't Donald Trump have the constitutional right to have a speech of defense? Fair? By the way, if Donald Trump has sacrificed nothing, how much has Hillary Clinton, working within government for long time, sacrificed? Has she lost kins? Has she ever been injured in fightings? Let's be just! Should the candidates of the US president be killed or injured abroad first then come back to run for the president? Let's be clear and fair: if Donald Trump has sacrificed nothing, nor Hillary Clinton has!