Hello all, I hope I have come to the right place to ask this.

I have been to the States 3 times-love it by the way!-and am from the u.k., which means I enter on the visa waiver.

Last time I went, on my return journy, the people at the customs did not take back the green form, which I didnt discover until ages later.

Will there now be problems if I try and enter the u.s. again?

Thanks for your help