Support for President Trump's wall along the U.S.-Mexico border is at an all-time high weeks into a partial government shutdown that began over a border security dispute for funding.

According to the results of an ABC News and Washington Post poll released Sunday morning, 42 percent of Americans support a wall. That is up from 34 percent one year ago and a previous high of 37 percent in 2017.

With 54 percent, the majority of Americans polled still oppose building a border wall. However, that opposition is shrinking, as 63 percent opposed the wall a year ago and the previous low was 60 percent two years ago.

Trump's demand for roughly $5.6 billion in border security funding led to what is now the longest government shutdown in history as Democrats in Congress reject any spending bills that include money for a wall. Last week, the fight escalated when Trump delivered a prime-time address to the nation to make his case for a physical barrier along the southern border, calling the situation a crisis. House Speaker Nancy Pelosi, D-Calif., and Senate Minority Leader Chuck Schumer, D-N.Y., delivered a rebuttal, arguing Trump was propagating a "manufactured crisis."

According to the poll, only about a quarter of Americans — 24 percent — believe there is a crisis-level situation in regards to immigration at the border.

While support for Trump's wall has risen, most Americans blame Trump and his fellow Republicans for the shutdown: 53 percent say Trump and the GOP are mainly responsible, while only 29 percent point to congressional Democrats. Thirteen percent of respondents blame both sides equally.

The survey, conducted of 788 adults by phone from Jan. 8-11, has a margin of error of 4.5 points. The survey was produced by Langer Research Associates. Sampling, data collection, and tabulation were run by SSRS.