Tai Kok Tsui Divorce & Family Law Lawyer, Hong Kong (China)

The inability of a spouse to engage in sexual intercourse with the other spouse. In some states, physical incapacity is a ground for an annulment or fault divorce, assuming the incapacity was not disclosed to the other spouse before the marriage.

Overdue alimony or child support payments. In recent years, state laws have made it difficult to impossible to get rid of arrearages; they can't be discharged in bankruptcy, and courts usually will not retroactively cancel them. A spouse or parent who falls on tough times and is unable to make payments should request a temporary modification of the payments before the arrearages build up.

Most of the property accumulated by spouses during a marriage, called community property in some states. States differ as to exactly what is included in marital property; some states include all property and earnings dring the marriage, while others exclude gifts and inheritances.

A formal request for a green card or a specific nonimmigrant (temporary) visa. In many cases, the petition must be filed by someone sponsoring the immigrant, such as a family member or employer. After the petition is approved, the immigrant may submit the actual visa or green card application.

(1) A son or daughter of any age, sometimes including biological offspring, unborn children, adopted children, stepchildren, foster children and children born outside of marriage. (2) A person under an age specified by law, often 14 or 16. For example, state law may require a person to be over the age of 14 to make a valid will, or may define the crime of statutory rape as sex with a person under the age of 16. In this sense, a child can be distinguished from a minor, who is a person under the age of 18 in most states. A person below the specified legal age who is married is often considered an adult rather than a child. See also emancipation.

A document that provides proof of a marriage, typically issued to the newlyweds a few weeks after they file for the certificate in a county office. Most states require both spouses, the person who officiated the marriage and one or two witnesses to sign the marriage certificate; often this is done just after the ceremony.

The biological father of a child born to an unmarried couple who has been established as the father either by his admission or by an agreement between him and the child's mother. An acknowledged father must pay child support.

The voluntary abandonment of one spouse by the other, without the abandoned spouse's consent. Commonly, desertion occurs when a spouse leaves the marital home for a specified length of time. Desertion is a grounds for divorce in states with fault divorce.