Tell the other company that you have an offer on the table with a clock on the offer. If they are your top choice tell them this and if you're the top candidate

Tell the other company that you have an offer on the table with a clock on the offer. If they are your top choice tell them this and if you're the top candidate, they should find a way to move the process along for you. Agree with what the others are saying about signing and then not going to work for company 1 might cause issues in the future, especially if you're looking to work in the same industry. If this company is going to sponsor you with a Visa, it's a significant commitment for them. I have personally never seen a company go after a person who signed and then moved in a different direction. I have know companies with a policy to never offer that person employment again.