Many publications use a comma between an independent clause and a dependent clause connected by a conjunction.
Recent example I came across:
I have to say I roll my eyes at the various attempts to explain President Trump’s decision to recognize Jerusalem as the capital of the Jewish state**, and to make plans** to move the U.S. embassy there.
This Purdue article seems to caution against such use: https://owl.english.purdue.edu/owl/resource/607/02/
Are these commas grammatically correct? Why do many publications place/allow commas in these instances? Your input would be greatly appreciated!