here's and excerpt.....
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A few scientists persevered in arguing that much smaller solar changes (which they thought they detected in the satellite record) had driven the extraordinary warming since the 1970s. But even among these outlying groups, leaders admitted that in the future, "solar forcing could be significant, but not dominant." Nevertheless the argument that solar activity was the true cause of global warming continued to circulate. It was one example of the indestructible "zombie" theories that plagued discussions. As it happened, solar activity sank to historic lows after 2005. Some prominent figures among the opposition to regulating greenhouse gases publicly predicted rapid global cooling. When temperatures climbed to a new record in 2014 (and a higher record in 2015, higher still in 2016, etc.) while solar activity remained unusually low, only the ignorant or disingenuous could persist in denying that greenhouse gases were the only plausible cause.
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Read the whole article to appreciate why the above conclusion was made..,
Link: https://history.aip.org/climate/solar.htm