My wife is pregnant and my in-laws are going to apply for a visitor visa for the US soon. Any suggestions for the preparation and the interview is appreciated. Anybody's parents rejected for a similar case? Any suggestions for todo/not to do? Thanks in advance.

VISA may be rejected because of the recent earthquakes. The consulate may see it as a way for them to get here and never ever go back. The only thing you can do is prove that they have at least 100 billion rupees in their bank account and many houses that are still standing. Prove that they have donated a huge amount of money to earthquake victims. Prove that they plan to build houses for a lot of homeless people. Prove that they have travelled all over the world. If they haven't, send them to all Asian countries for a long vacation. It's all about proving. Hence, proved.

Roomrent Bro, I assure you they will get the visa. Don't forget to send them the documents from your hospital (Doctor) mentioning the delivery date of the baby. Besides that, you write a letter (kind of invitation) saying that your inlaws would be staying with you and you will be bearing any financial responsibilities during their stay here and assure the visa consular that they will return back on the legal time frame (which is abt 6 months, if it is not extended).

Paagal haru j pani bolchhan, kei thaha chhaina, All the above comments are based on my personal experience.

Yep- agree! I went through a similar phase and had no issue getting visa for my mom. Just get the document from hospital about the pregnancy. Write a nice invitation letter saying why you want to invite them, reassuring your financial responsibility while they are here. Also make sure to include all your pay stubs, tax docs, work permits or your status card etc. Don't hide anything positive that you have. Good luck!

Based on what I've heard, the biggest challenge is to prove that your in-laws will return to Nepal. Ask them to include documents that show strong ties to Nepal (i.e. children in Nepal, house, land, job/business etc)

Sometimes pregnancy may not be the good reasons to invite parents or in laws because consular have inquired occasionally about possibility of working as nanny for their own relatives. Tourist visa to visit relatives and see the country would be better idea with strong documents that reflect ties to the native country.

Not sure, it strongly depends on the documents you provide here and something to show that your in laws has strong ties to return back.
One of my friend was US citizen and has same situation as yours. He and his parents did not want green card , so they applied for visitor visa. Their strong point was that they could have applied for green card if they want to stay here ;-)

If your In-laws are financially able, you don't have to sponsor them. What I have heard in the past is that sponsoring shows that the person is financially dependent on others and have more reasons to stay but then again its all about luck. I guess your In-laws have to show their intent is to visit and not to permanently reside.

As they say, Do your best leave the rest. Good Luck.

In addition to some good advice above, I would like to emphasize to 'show strong ties to Nepal and provide strong reasons that your in-laws will return to Nepal after their authorized stay in the US'.

Strong ties may be their employment, properties, social and civic involvement, business, family etc.

Good Luck.