LeggMason EX Markets seems to be reliable. It says it's regulated in the US.

https://www.leggmasonpro.com/#/home

No, LeggMason EX Markets is not reliable, and its claims of being regulated in the US have been proven to be baseless.

It's critical to note that the website of LeggMason EX Markets is identical in content and graphic design to those brokers previously flagged by BrokersView as suspicious. It almost copies the regulatory statements from these dubious counterparts to appear legitimate, which we have repeatedly confirmed to be unfounded. Unsurprisingly, LeggMason EX Markets' regulatory assertions are also falsified. 

Furthermore, the Securities Commission of The Bahamas (SCB) has added LeggMason EX Markets to its warning list for offering financial services or products without their permission. This warning further suggests issues with LeggMason EX Markets' credibility.

In light of this, LeggMason EX Markets poses substantial risks of fraud and identity theft. For a safer trading environment, it is highly recommended to steer clear of unlicensed brokers like LeggMason EX Markets and instead choose fully regulated ones.