Vote.
The same way regardless of whether the democrats or the republicans are in power.
Ok, are you under the impression Dems would get help passing this abortion protection bill from Republicans?
You must realize that you have kind of an inconsistent view of the efficacy of the oval office. When the republicans are in power, or are about to be, this is something to be feared, and they’ll turn the country into a banana republic, and they’ll curtail all civil rights. But when a democratic is in power, the presidency becomes this meaningless ceremonial role that can’t really do anything because of those darned republicans, and so you can’t really blame them for not making any meaningful change. This is clearly internally inconsistent. One of these two opinions is false. Either the presidency can be used to effect meaningful change, or it cannot. You can’t believe both.
I think the republicans show that the former is true. Whether you like it or not (I certainly don’t), whenever the republicans are in power they’re able to enact massive impactful changes (the changes which eventually led to the overturning of Roe v Wade are a good example). The reasons as to why the democrats do not enact such changes is up for debate, but the idea that they don’t because they can’t is demonstrably false.