 Bolivia has been wracked by protests, mostly about the dismal economy that's struggling. There's a scarcity of dollars and food shortages. Arce is unpopular and has been accused of making some undemocratic moves, especially with the opposition. Some are in jail. And he's locked in this very public political fight with his once mentor, the former leftist president of Bolivia, Evo Morales. They're fighting over control of the ruling party and who will be next year's presidential candidate. Eduardo Gamara, a Bolivia expert,