FOREIGN KEY

Hi,

I have created a table is postgres with a FOREIGN KEY reference to
another table.
I am using the COPY command to copy the data from a file to this table.
I am getting this error:
referential integrity violation - key referenced from A not found in B

I understand that I am inserting a row in A with an id that is not in table B,
I want to ignore those inserts that are violating the referential integrity.
What should i do?

Aslo i didn't find a way to list the FOREIGN KEYS in a table
\d <tablename> it gives only the structure.

Any input is welcomed,

Andras.