You mentioned that 3 cash, but are the payouts significant? You had to figure that the Chip Leader could push on you, yet you raised anyway.You said his range is wide, so he could easily have you beat. He should know you have a hand, if you've been as tight as you say, and he's still check-raising you.You can't just call and fold. Fold now or push it in, but you should have decided this before you decided to raise in the first place. Without knowing the payouts, I'd call if you think you have him beat.