The border issue is a wedge issue! The GOP has used this and other BIG LIES and Conspiracy Fictions to cover up they don't support all of the people.
Try to name one policy that benefits the Middle Classes and working poor?
A probable more 4 millions new illegals crossing the border in just the last two years, MOST of whom are unknown quantities and MANY of whom we know are really bad actors, is not a lie, big or otherwise.
Even Cheney and Kinzinger, both who hate him with a passion, voted with Trump well over 90% of the time for
a tax reform package that raised ALL boats in ALL demographics with the poorer folks and middle class being advantaged the most. Black and brown people saw the largest advancements in their demographic that the huge majority have ever seen. Millions moved out of poverty, off of welfare rolls and/or SNAP and family incomes/wealth increased by thousands. Inflation and interest rates were low, we were energy independent, and the USA was strong, secure, and respected by everybody. Republicans don't favor one demographic over another but push policies that help everybody except maybe the laziest or most dishonest and believe a strong, secure, economically independent, and prosperous America is best for Americans and the world.
Trump's policies of removing unnecessary or destructive regulation released enormous economic energy, was bringing good jobs back to the USA including manufacturing jobs that the neocons and Democrats insisted were gone forever. The border was the most secure it had been in a very long time.
The Democrats aren't too stupid to see the polls and how unpopular many of their initiatives are. And they know if Trump made them look that bad before Biden, how much worse it would look for them if he gets back in and does it again.
That is what the Jan 6 Commission is all about. It is strictly intended to so damage Trump he can't run and/or be re-elected in 2024 and they don't care how unethically or dishonestly they do that. Chris Christie is spot on about that.