Obama was NOT a good President, and the only thing that kept him from enacting more gun control was the fact that his party lost control of the House after 2 years, and the Senate right after.
He used pure emotional appeals to push his gun control agenda. After Sandy Hook, he said, "If we can't get an assault weapons ban after something like this, then we'll never get it."
That tells you he had an agenda, not a solution -- just like everyone pushing gun control.
Just because he FAILED does not mean he wasn't pushing to erode our rights more than he did. With every mass shooting, he made comments about having more laws passed. He enacted executive orders when Congress refused to act on his agenda.
He ran on the message of ushering in "fundamental change" for the country. You can't love the US and believe in the Constitution while simultaneously calling for the foundation of what makes us great to "change". His wife after Obama was elected, "...for the first time in my adult life I am proud of my country..." This couple has no love for the US, the Constitution, or your rights. Period.
And Joe Biden? Just as bad as Obama, if not worse:
“The 1994 assault weapons and high-capacity magazines bans worked,” wrote Biden,
who currently leads the field, in a New York Times op-ed last weekend. “And if I’m elected
president, we’re going to pass them again—and this time, we’ll make them even stronger.”
https://www.gq.com/story/modern-assault-weapons-ban