Hi Peter, thanks for doing this. We're a small consulting company based in Germany and we have a couple of customers in the US. We'd love to work on-site but s

Hi Peter, thanks for doing this. We're a small consulting company based in Germany and we have a couple of customers in the US. We'd love to work on-site but so far haven't done so because we couldn't sort out the visa issues. Customers in the US would pay our German company which would then pay us (the founders/employees). Our contracts are usually short (1-2 weeks max). We've actually talked to two different lawyers (US & German based) and have received two different answers. - One told us L1 would be the best option but that'd mean investing in the US which we can't meaningful do (for our consulting we really only need a laptop and no office) - Another one told us a normal ESTA/B1 visa would work as well. We always worked under the assumption that a B1 visa is not for paid work. So we're confused. Customers also don't want to go through the hassle of sponsoring a H1 visa for a two week contract. Can you give us any hint which visa category would be most appropriate for this kind of work and whether the B1 statement is correct or not. Thank you! We'd also be more than happy to pay for someone to help us with this but our trust has eroded a bit because of the different answers we've received in the past.