I was firmly opposed to Donald Trump in the 2016 primaries. I voted for him against Hillary, of course, and was hoping for the best. Within a year, Trump had firmly won me over. I found his personality grating at times but his policies were solid.
Trump's politics have evolved over the years in the right direction. I don't know how early in the Obama Administration, he gave that donation but I'm sure he wouldn't do it now. His position on abortion changed too and his nomination of Justices seem to confirm the sincerity of his conversion.
All hehasbeen doing is attacking from the left.