A "clear" law would likely not result in a 6:3 vote. There are enough cases in the Supreme Court that get 9:0, those can probably be called "clear".
The Supreme Court is more and more packed with dishonest, racist Republican political hacks who try to twist words to overturn centuries of precedent.
I'm not sure I see where the "more and more" is coming from.
Out of the three justices nominated by Trump, two (Barrett and Kavanaugh) voted in favor of birth citizenship rights; does it qualify them as dishonest racist Republican political hacks? The other two who dissented, Thomas and Alito, have been serving for 35 and 20 years respectively, so it's hardly about packing.
Also, while 3 of the 4 newest justices were indeed appointed by a Republican president and 1 by a Democrat, before that, we got 2 new justices appointed by Obama (Sotomayor and Kagan). Unless the Congress actually increases the number of justices, I would say the current system works just as designed.