Incredible Hulk #436 (1962-1999 1st Series)
The government has found the Hulk's home and an enemy with connections to Hulk's past comes back to haunt him. He uses Betty to draw Hulk into a trap. Enraged the Hulk obliges, but if the he loses control he'll revert back to his human form and become vulnerable. It's all part of the plan of...the Leader?