WASHINGTON — The Senate began voting Thursday on a $70 billion bill to fund Immigration and Customs Enforcement and Border Patrol through the end of President Donald Trump’s term. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content. Republicans plan to pass the bill without any Democratic support. But first, they’ll have to endure a “vote-a-rama” during which senators from either party can offer amendments, which Democrats will use to make Republicans take painful votes. There were some early signs of trouble as the first Democratic amendment was held open by GOP leaders for three hours, followed by multiple votes in which various factions of Republican senators broke with Trump’s priorities and opposed the $1.8 billion “anti-weaponization” fund and his White House ballroom. The amendment by Senate Minority Leader Chuck Schumer, D-N.Y., sought to ban the Justice Department from creating the “weaponization” pot of money. Democrats and some Republicans see it as a “slush fund” to funnel taxpayer money to pay Jan. 6 rioters and other Trump allies. It failed …