marrying after entering with b1 visa

if you do so shortly after entering the USA, then you are committing fraud. by misrepresenting yourself entering as a visitor, when you planned to immigrate and then yes, they could deny your petition. (this is assuming you are talking about immigration to the USA).
 
Looks like you don't have any clue of what you are doing. Better read DS 156 guide lines properly. Really wierd question , by the way
 
People can change their mind and decide to stay permanently after entering the US. Here the OP already has an intent to settle permanently. two very different scenarios.

Looks like you don't have any clue of what you are doing. Better read DS 156 guide lines properly. Really wierd question , by the way
 
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