accords signed in June when people occupied the Pimental area for three weeks.

Indigenous groups fear the dam across the Xingu River, a tributary of the Amazon, will harm their way of life. Environmentalists have warned of deforestation, greenhouse gas emissions and irreparable damage to the ecosystem.

The dam is expected to flood some 500 square kilometers (200 square miles) along the Xingu and displace 16,000 people, according to the government, although some NGOs put the number at 40,000 displaced.

The natives want their lands demarcated and non-indigenous people removed from them, as well as a better healthcare system and access to drinking water.

Expected to produce 11,000 megawatts of electricity, the dam would be the third biggest in the world, after China's Three Gorges facility and Brazil's Itaipu Dam in theJohn Kerry has been a superb public servant, beginning with his heroic service in Vietnam and extending through a 28-year career in the Senate and a productive four-year stint as secretary of state. He is as qualified as anyone in U.S. history to serve as president of the United States. Yet, he should not run for president in 2020.

Joe Biden is a wise and decent soul, someone committed to making this a better country. In his 36 years in the Senate and eight as vice president for Barack Obama, he too has demonstrated the character and qualifications to be an excellent president. He, too, should not run in 2020.

Sen. Bernie Sanders has provided a powerful voice for the otherwise voiceless. He should not run in 2020. The same