Not paying grazing fees...not taxes. It's been shown his taxes are current. Maybe splitting hairs, but the news has been saying "taxes" like he's a dead beat. He's paid taxes, but refuses to see BLM authority and intentionally won't pay the grazing fees. I only mention it because the other day I heard it reported that he's not "paid his taxes or grazing fees," and that's inaccurate.
It's a cliché, but there really are two sides to this story. He's pushed his luck and if it's true they've been billing him or whatever for 20 years, then yeah, that's dumb that he's not paid. On the other side, they show up with fully automatic weapons and snipers and it starts to get weird when there's a hundred different ways they could've gotten serious about it other than laying siege. Not to mention they flip out over some cattle on barren ground and send in a battalion, but the border sits wide open and no one cares. But that's different conversation.
(And before anyone gets upset, I'm not anti-immigration. I'm anti-illegal immigration.)