Biden's the president. He can set executive branch priorities. He had the option to just stop building the wall. Even if someone found a way to challenge him legally, he's the president, he wouldn't have any consequences.
When republicans are president they do whatever they want then democrats lecture them about how they can't do that so republicans say "what are you gonna do about it" to democrats and then they get what they want
When a Democrat is president they ignore what their voters want, lecture their voters about why they can't do anything and then when their voters complain tell them "what are you gonna do, vote republican" and nobody gets what they want
Biden's the president. He can set executive branch priorities. He had the option to just stop building the wall. Even if someone found a way to challenge him legally, he's the president, he wouldn't have any consequences.
When republicans are president they do whatever they want then democrats lecture them about how they can't do that so republicans say "what are you gonna do about it" to democrats and then they get what they want
When a Democrat is president they ignore what their voters want, lecture their voters about why they can't do anything and then when their voters complain tell them "what are you gonna do, vote republican" and nobody gets what they want