The U.S. under the legislation would impose a $1,000 fee on migrants seeking asylum — something the nation has never done.

Republicans in the U.S. Congress turn in earnest this week to their biggest challenge of Donald Trump's presidency: trying to bridge internal divisions over proposed cuts to Medicaid and popular green energy initiatives to pay for a landmark tax-cut bill they hope to enact by June.

House Republicans are beginning the process of crafting policies within their massive reconciliation framework.