Visitor's visa denial and reapplication

[immihelp]

Dear SIr/ Madam,

First of all thanks for making wonderful site which is guide to those who intend to visit USA. Assistance this site provides is inexplicable.But I need help beyond this, I am facing one problem while filing visitor visa for my parents.We are two childrens of my parents, both are in US and on PR.. While filing petiton for first time US consulate decline Visitor Visa by saying

My parents would stay back in US but anyway we cannot change the background. Can u suggest any way by which they both get the visa. We sent all the documents as required and consulate offficer didn't bother to have a look on it . Just by oral interview he rejected petiton..

Please help me to find a way. I really appreciate your time and guideance in advance.

[immihelp]

Show as many ties to the home country as possible for your parents.