Some Congressional lawmakers are pushing to get rid of a lucrative tax loophole for cryptocurrency investors estimated to be worth billions of dollars per year. It’s a potentially rare area of bipartisan agreement when it comes to tax and crypto issues, experts said.

The tax code allows investors in digital assets like bitcoin and ether to claim a tax benefit for an investment loss, just they do for stocks and other traditional assets.

However, unlike stocks, crypto isn’t subject to so-called wash sale rules.

In practice, that means crypto investors can essentially claim the tax break associated with an investment loss without divesting the holding…