Well why not? He has allowed in, actually invited in, millions upon millions of unvetted migrants and turned them loose in the country on their own recognizance that is rarely if ever enforced. And that doesn't count the hundreds of thousands of 'got-a-ways' that we don't know who they are or what their intentions are.
And he has allowed 400,000 or so more fly into the country 'legally' mostly to Florida and Texas where they absolutely are not wanted These presumably receive work permits and two-year visas and are completely vetted. I would bet a dollar to a donut they aren't at all vetted and won't be and won't be required to leave when their two year visa expires if the current administration is still in power.
The more than 45 cities that migrants have flown into under the controversial Biden-era parole program for four nationalities are being revealed in new documents.
www.foxnews.com
So what difference does bringing in a few hundred thousand or millions of radicalized, Jew hating, America hating Palestinians make?
It's all part of a deep state goal of destroying the America we know and love and replacing it with something very very different.