President Trump is using his July 4 deadline as a cudgel to pass his signature domestic policy bill.

© Eric Lee for The New York Times

Senators Susan Collins of Maine, Rand Paul of Kentucky and Thom Tillis of North Carolina defied the president on his signature measure.

Senate Republicans can afford to lose no more than three of their own votes on the bill, but two already are opposed and others remained undecided.

© Kent Nishimura for The New York Times and Haiyun Jiang/The New York Times