During negotiations in 2011 to raise the debt ceiling, Republicans complained that Mr Lew lectured them on what was good for their own party while repeatedly raising obstacles to a deal.
But even if the treaty does pass in the end, the long process of negotiation and ratification has pushed back the rest of Mr. Obama's program and has raised obstacles to the more controversial measures.
Still, Mr. Schumer and other authors of the first measure ran into resistance from senators who were reluctant to give up authority over the administration and surrender leverage they can exert to capture the White House's attention by raising obstacles to nominations.
"Accused of raising obstacles to free competition, RFI released a statement speaking of the need for physical barriers between railway property and public streets, a need that only became urgent the day people could buy a ticket for a rival train".
Keats's declining health and personal responsibilities also raised obstacles to his continuing poetic efforts.
This spurred domestic instability, raised obstacles to business development, and most importantly, allowed for serious violations of human rights, which were perpetrated by a separatist regime in Transnistria.
But Mr Varoufakis continues to raise obstacles, say officials in Brussels and Frankfurt.
"Unfortunately, Uber is doing what it always seems to do: raise obstacles and drag its feet— all while continuing to flout the law," Herrera said in a statement.
Health workers fear suspicions of unethical practices, even if proved untrue, will raise more obstacles to vaccination programs.
