Um, you think the sun has something to do with the amount of CO2 human beings have put in to the atmosphere?
You think the fact that CO2 levels in our atmosphere have passed 400ppm is natural?
Before the Industrial Revolution, the global average level of CO2 was about 280 ppm.
At the end of the last Ice Age sea levels were about 220 meters lower than today and the North Sea was dry land.
The last time the Earth's CO2 level was 400 ppm, some 3 million years ago, the Arctic was ice-free and sea level was some 25 meters (82 feet) higher than it is today.
Think about that. The majority of the world's population lives on the coast. Most just a meter or two above sea level. The planet is warming and the polar ice is melting. You can argue about how fast or how slow the warming and melting is occurring, but no one is denying that temperatures are on the rise and the ice is melting.
So yeah, you can blame it on the sun and do nothing if you like, but the fact is WE did this.
From a political perspective the climate change denialists (which, no surprise, are primarily Republican) are once again on the wrong side of science and history. Being a climate denier is like opposition to gay marriage in the way it paints Republican politicians as completely out of touch with reality and the will of the people.