Petition for brother and US visa abroad

[usa2010]

Hi,
I am becoming US citizen soon and I have a question about petition for my brother. I know it takes 10-12 years for this process. Question is once I file I130 can he still apply for US visa abroad?
Can he still visit US as a tourist or for business?
Also, is there process/steps listed to file petition? (Website)
Thanks.

 

[Triple Citizen]

He can apply for a visit visa while having an I-130 in the system, but chances of it being approved are slim.
Even if he gets a visa, he may still be denied entry at the POE.

Question is once I file I130 can he still apply for US visa abroad?
Can he still visit US as a tourist or for business?