Lawmakers to consider changes to constitution this month
Jansel Moreno, Victor Manuel Dueñas speak via WhatsApp, email
Policy only bolsters government at expense of Cuban people
U.S. Embassy in Havana will remain open
Embargo against the island remains in place
Nelson Gandulla is a vocal Mariela Castro critic
Security agents passed activist's house during interview
Mariela Castro led march in city of Santa Clara
Nelson Gandulla said authorities summoned him for 'interrogation'
Nomination to face steep congressional opposition
