Biden has no say in what Israel does or doesn’t do. At a stretch, he shouldn’t be trusted to have a say in which flavor of pudding he wants.
The Gaza Strip is tiny and the same size as Las Vegas. What’s taking IDF so long?
Clearing miles of tunnels and urban warfare generally is a time consuming and bloody affair. Every step is a potential mistake. Plus, the IDF has to be mindful of civilian casualties as the whole hostile media is eagerly waiting to jump on them if they don’t watch out.