Where can I find research on how Great Britain asked America to join the WW2 eff

Question:

Where can I find research on how Great Britain asked America to join the WW2 effort?

Best Answer - Chosen by Asker: America got involved because of Pearl Harbor. I am sure that Great Britain asked America to join in the war and that America would have joined the war even if Pearl Harbor had not been bombed to protect its own interests in international affairs, and to help its allies in any way it could. Could you be more specific in your question though and name people or places in which top British officials met with American officials?