Only senate has the power to approve foreign treaties and presidential appointments
Well, we discovered that we needed to upgrade security so that potential criminals weren't coming into our country, and so potentially harmful substances weren't being brought onto our planes. That meant literally anything that could become a bomb, start a fire, stab someone etc. As for Pearl Harbour, I think that had more of an affect on how we thought our military and defence system was working.
Answer:
Finally, a compromise was reached with the Southern states that guaranteed the continuance of the slave trade for 20 years after the adoption of the Constitution. That deal set the earliest expiration date as 1808 — which Congress met. Great Britain also banned the African slave trade in 1807.
So yes they agreed to wait 20 years
Part of it was because of the Industrial Revolution and the invention of the cotton gin by Eli Whitney.
