The Government charged Sanders with a conspiracy taking place
on June 28, 2017. When Sanders pled guilty the Government
reserved the right to charge him for relevant conduct that
happened before June 28. Then the Government charged him
with a conspiracy running from April 2016 to May 2017. At trial
the Government presented evidence over Sanders's objection of
events happening on June 28, 2017, and after. Did the
Government violate Sanders's rights under the Fifth Amendment
to have a grand jury consider the charge and to have the
Government honor its implied agreement not to use later events
against him?

Did the Government violate Sanders's rights under the Fifth Amendment to have a grand jury consider the charge and to have the Government honor its implied agreement not to use later events against him?