I used to work for a large background investigation company.
The Federal Fair Credit Reporting Act (FCRA) generally (there are exceptions) limits pre-employment background checks to convictions within the past seven years. Although sentencing can bring this into scope. So for example if you were convicted 10 years ago, but were sentenced to 4 years probation that conviction could still be used against you. State laws can impose further limits on background checks. Depending on how recently this conviction occurred and your state of residence it may not even be an issue.
The Federal Fair Credit Reporting Act (FCRA) generally (there are exceptions) limits pre-employment background checks to convictions within the past seven years. Although sentencing can bring this into scope. So for example if you were convicted 10 years ago, but were sentenced to 4 years probation that conviction could still be used against you. State laws can impose further limits on background checks. Depending on how recently this conviction occurred and your state of residence it may not even be an issue.