I know Obama knows better than George W. Bush.
I thought Nixon was the worst President we had ever had, save only perhaps Andrew Johnson.
Either people are changing their minds about Trump, or increasing numbers of his supporters are deciding it is too embarrassing to admit they support him. Neither is a particularly good position to be in.
Presidents Truman and Nixon left office under dark clouds of scandal and with abysmal levels of support, but with the passage of time, both have been reassessed far more positively.
Even Obama's staunchest supporters are starting to leave him. Last week Michelle Obama demanded to see a copy of his birth certificate.
As everyone knows, I have never been a fan of George Bush's presidency.
I think the problem with President Obama - and I like him personally, I came into the Senate with him - is his agenda.
It's - I can't imagine a world - the idea that every day Sarah Huckabee Sanders briefs, Donald Trump stops what he's doing and turns on the TV and watches it while eating a Taco Bell or whatever he eats. And then she has to go into his office afterwards and get critiqued on it.
I think President Obama has been an extraordinarily successful president, and that this period will record that with a bunch of exclamation points. But obviously, not everybody thinks that.
Trump is an erratic figure - seemingly fragile, consumed by his own unpopularity and desperate to somehow exceed Barack Obama in public acclaim.
There's no doubt that usually a president's public image is enhanced by going to war. That never did appeal to me.
Ironically, the possibility that the president dodged his military service has increased his approval ratings with Democrats by 80 percent.
Every year since 1990, the Gallup poll has asked Americans to assess all the presidents since John F. Kennedy. And every year, Kennedy comes out on top.
Though there are many differences between Barack Obama and Jimmy Carter, they are strikingly similar in their poor economic records and even more so in their shared pessimism and bearishness on America.
I don't think Donald Trump is Ronald Reagan.
There used to be this feeling under Eisenhower and Kennedy and Roosevelt and Truman that government was a solution. Trust in the presidency fell precipitously under Johnson - real lows. And it's never come back. It's a trend that, if you're liberal, is really discouraging.
Before Donald Trump took office, optimism about his presidency was the lowest of any president-elect since at least the 1970s.
When you micro-analyze the approval ratings, there's aspects, and the questions come in, 'I love the president, but I dislike X, Y, Z,' or 'I like the president but dislike X, Y, Z.'
Obama was never that bad or that great, and the same is probably going to go for Trump.
Donald Trump enters office with historically low approval ratings, that's where the battle could get fought. If the country turns against him, his Republican adversaries could feel emboldened.