No. While upholding the sacredness and permanence of marriage, the Catholic Church knows the reality of separation and divorce and tries to reach out to those who are struggling with the pain of a marriage that has broken down. Divorced Catholics are considered full members of the church and have the right to holy communion. However, if they remarry without having obtained an annulment or if they are living in a common-law relationship, they can no longer receive the sacrament of communion in the Catholic Church.
The Church also recognizes the validity of a marriage between baptized non-Catholics, so if a Catholic wants to marry a divorced non-Catholic Christian, the non-Catholic must obtain an annulment before being allowed to marry in the Catholic Church.
Grounds for Annulment include lack of sufficient use of reason, lack of discretion about essential matrimonial rights and obligations, and inability to assume the essential obligations of marriage due to psychological causes. The validity of a marriage can be examined when there is a lack of consent, such as in the case of immaturity or psychic incapacity; a lack of knowledge, such as deceit or error about the person; or a lack of will, such as when force or grave fear is imposed or when there is intention against procreation.