Why do liberals blame trump for Biden’s fuckup at the border?

They blame Trump for it being underfunded and staffed when the reality is he didn’t allow illegals to cross and ordered them to be held in Mexico which meant we didn’t have to have huge funding and expensive staffing. But now fuckup Biden has reversed this and it’s now a huge financial burden on taxpayers
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The border crisis is getting worse by the day. Why aren’t liberals bitching and cursing Biden like they did Trump?
Why do liberals blame trump for Biden’s fuckup at the border?
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