Please answer the questions below based on this case:

Mr. Abraham Quintanilla is a U.S. citizen that married a Mexican national in a beautiful wedding in Monterrey, Mexico. There were over 200 guests present, including Mrs. Marcela Quintanilla's children from another marriage. Their family and friends took turns to toast to a happy and blissful marriage after Mr. and Mrs. Quintanilla's courtship for 2 years.Mr. Quintanilla wants to petition Mrs. Quintanilla to come live with him in Ocean City, Maryland. Mr. Quintanilla is a wealthy business owner and owns several investment properties throughout the east coast. To protect his assets, he signed a prenuptial agreement with Mrs. Quintanilla and they agreed to keep their assets separately.

1) Mr. Quintanilla wants to know what kind of evidence he will need to prove his bona fide marriage to his beautiful bride?

2) What steps will USCIS take to ensure they don't have a sham marriage? Should he be worried about the prenuptial agreement?

3) Will Mrs. Quintanilla be subject to marriage quotas or will his bride be able to immigrate to the US without worrying about a long wait time?

4) What are both the positive and negative factors in his case?