It's like gas prices. Often, the POTUS gets blamed for them. But he can do very little about them. The market, and geo-politics, determines the price. Same with immigration/migrants. The POTUS can do very little, barring an emergency that enables him/her to invoke Title 42. Under current law, which has been the law for decades, if a migrant gets across the border they can apply for asylum. It's really that simple. The recent legislation would have curtailed that a lot. But whether that, or other, legislation ultimately is approved, legislation is required. The POTUS can't just EO his/her way out of it. Trump tried, and it was shot down by the courts. And until albaby informed us, I was unaware that Biden also tried...and it was shot down by the courts.

en.wikipedia.org - Remain in Mexico

"In February 2021, the administration of President Joe Biden ended the "Remain in Mexico" policy, resuming admission of new asylum seekers..."

And it goes back and forth from there.

Parole numbers:
Trump: 330k
Biden: 2.3 million

I'm not saying Remain in Mexico is good policy. I'm saying these numbers, and the other numbers in the article posted upthread, they look bad. It looks like an invitation, and the invitation was accepted by millions of migrants.

What do I tell my cycling buddy? This is all the Republicans fault, even though the Democrats held the presidency and both houses for two years?

Here in Ohio, quite a long way from the Southern border, the three Republican candidates for US Senate are falling over themselves to point all this out. I'll be amazed (and delighted) if Sherrod Brown keeps his Senate seat after November.

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This article is from two years ago, when Democrats were expected to lose in the midterms:
theguardian.com - Republicans politics US immigration midterm strategy

"Biden has worked to reverse many hardline policies that were at the heart of Trump’s “zero tolerance” approach to immigration. The number of migrants attempting to cross the border has risen sharply.

Biden has argued that the only way to address the migration is at the source – an ambitious plan that will probably take years to bear fruit. In the short term, his administration faces acute operational and political challenges."