This is likely referring to Operation Talon, an ICE program planned in the final weeks of the Trump administration aimed at deporting sex offenders. The suspension is "interim" and the Biden administration had "nothing to do with this decision" according to an ICE official:

Overall it's dubious as to what exactly the OP is referring to. Assuming they are referring in part to the cancellation of 'Operation Talon', a deportation plan for sex offenders forwarded by the Trump administration in its final days, this was not done by Biden but ICE solely.

Snopes discredits. Tweet claims Biden reversed a policy. He did not. Homeland Security potential hold. Program may never have been enacted by Trump admin. Promoting Qanon theory liberals and pedophilia.