Can I move to the US while I wait for my green card?

There is no special visa that would allow you to come to the United States ahead of the time that you are entitled to do so under your brother’s petition. On the other hand, you may be able to enter through some other nonimmigrant category such as H-1B specialized occupation worker or L-1 intracompany transferee as those are dual intent visas under which the fact of applying for immigration would not be negatively considered by a consular officer in adjudicating the visa application. Other nonimmigrant visas which require nonimmigrant intent such as visiting or student visas could still be given in the discretion of an American consular officer taking into account all the circumstances of the application. Due to the limitations of the Lawyers.com Forums, Alan Lee & Arthur Lee, Esqs.’ (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.