The National Policy and Advocacy Council on Homelessness:

While we join other organizations who oppose the legislation on constitutional grounds, the focus of this letter will be on practical reasons why the ordinance is not needed and will not succeed in its goal. [...]

Issuance of citations to homeless persons living on the streets actually makes it more difficult to end their homelessness by providing housing. When a citation is issued, a homeless person will be required to appear in court and/or pay a fine. Typically people living on the streets cannot pay the fines and do not have the wherewithal, while struggling to survive, to note their court date and appear on schedule. As a result, a “simple” ticket can turn into a misdemeanor failure to appear charge. An outstanding misdemeanor can, in turn, prevent an individual from receiving federal housing, disability benefits, and other assistance. When this occurs, individuals remain on the street, continuing the very conduct that the ordinance purports to address. [Full letter in this .pdf]

The United African Public Affairs Committee of Washington State:

We think this bill does nothing to address the claim made by the supporters of the bill. It is sending the wrong message that poverty is crime. We believe that addressing the causes of the problem is the best way to approach this issue rather than penalizing the victims.

We [are] also concern[ed by] the power given to the police to enforce this ordinance, which could result more abuses and unintended consequences.

We respectfully disagree with the proponent of this ordinance that this bill will either increase the safety or the security of Downtown Seattle.

M. Sh. Hassan
UAPAC Public Relation Director

Meanwhile, former city council member Judy Nicastro says:

It’s pure political posturing. There is already a law on the books. It’s all about jobs. If you want to help this city create good jobs, then you don’t have problems in downtown.

What the bill is actually going to do is move people to other parts of the city, that doesn’t solve problems of getting people off the street and into jobs. It's very simple more people are on the streets because more people are unemployed. Obviously, Tim Burgess wants to run for mayor so this is his shtick.

In addition to the four district Democratic organizations (34th, 36th, 37th, and 46th District) that have passed resolutions to oppose the measure, opposition includes a federation of all the city's community councils, the Seattle Human Rights Commission, State Senator Joe McDermott (D-34), State Senator Jeanne Kohl-Welles (D-36), King County Council Member Larry Gossett, City Council Member Nick Licata, former city council member and superior court judge Jim Street, the ACLU of Washington, Seattle NAACP, Real Change Newspaper, the Seattle King County Coalition on Homelessness, Interfaith Taskforce on Homelessness, Seattle Displacement Coalition, El Centro de la Raza, Minority Executive Directors Coalition of King County, Lutheran Public Policy Office, Statewide Poverty Action Network, Asian Counseling and Referral Services, Urban Rest Stop, Roots, and the Church Council of Greater Seattle.